## Alphanumeric Series Questions and Answers Notes 2021: Download Alphanumeric Series Study Materials

Every year, they release notifications for several vacant posts, so required people interested in the job can apply for the job. To ace the exam, every candidate needs to prepare for the exam as per the syllabus and information provided in the study materials exclusively for this purpose. To get the study materials that are required, you must download the files provided below. You can click on the links given below to download the files and then study them. We hope you find our resources helpful. Every student who has studied using our study materials finds the exam easy to ace since question banks and solution keys are attached along. Once you’ve mastered the content provided in the study materials we’ve provided for you, you have nothing to worry about when it comes to acing the exam. Use our resources to study well for your exam and get your dream job.

DIRECTIONS (1 -5): Study the following arrangement carefully and answer the questions given below.

4 K % R T 3 E P # A 7 B 9 D I Q @ 2 8 V U © H J 5 F 1 % 6 M W

1. How many such consonants are there in the above arrangement, each of which is immediately preceded by a number but not immediately followed by a letter?

A. One

B. Two

C. Three

D. Four

E. More than four

Correct option is: C

Solution:

Number  Consonant  Symbol/Number

Such combinations are:

4K%,  7B9,  5F1

• Which of the following is the third to the left of the tenth from the left end in the above arrangement?

A. E

B. 9

C. B

D. P

E. None of these

Correct option is: A

• Four of the following five, are alike in a certain way based on their positions in the above arrangement and so form a group. Which is the one that does not belong to that group?

A. 2VQ

C. 165

D. TP%

E. H5U

Correct option is: D

• How many such symbols are there in the above arrangement, each of which is immediately followed by a letter but not immediately preceded by a consonant?

A. Five

B. Four

C. Three

D. Two

E. One

Correct option is: E

• Which of the following is the second to the right of fifth from the left end in the above arrangement?

A. E

B. #

C. B

D. P

E. None of these

Correct option is: A

Directions(1-5): The questions are based upon the following six 3-letter words.

TRE  POK  OWL  ARE  SIN  UTE

1. If ‘C’ is added in the beginning of the words that start with a vowel, then how many meaningful English words can be formed?

A. One

B. Two

C. Three

D. Four

E. None of these

Correct option is: C

• If all the letters are arranged as per alphabetical order (within the word) then how many letters (in the English alphabet series) are between the middle letter of third word from right end and second word from left end?

A. 5

B. 8

C. 0

D. 1

E. 9

Correct option is: E

• If ‘E’ is added in the end of the words that start with consonant, then how many meaningful English words can be formed that end with ‘E’?

A. One

B. Two

C. Three

D. Four

E. None of these

Correct option is: C

• How many meaningful English words can be formed if first and third letters of all the words are interchanged (within the word)?

A. None

B. One

C. Two

D. Three

E. More than three

Correct option is: B

• After changing all the vowels (within the word) to their immediately succeeding letter and all the consonants (within the word) to their immediate preceding  letter then which of the following will be the last letter of the fourth word from left end?

A. F

B. K

C. J

D. V

E. None of these

Correct option is: A

Directions (1 – 5): Following questions are based on the five three-digit numbers given below:

657    412    568    413    672

1. If 2 is added to the first digit of every even number and 1 is subtracted from the first digit of every odd number, what will be the difference between the 2ndlargest and 2ndsmallest number?

A. 455

B. 211

C. 559

D. 317

E. None of these

Correct option is: B

• If all the digits in each of the numbers are arranged in descending order within the number, what will be the square of the sum of the digits of the largest number?

A. 361

B. 441

C. 324

D. 400

E. None of these

Correct option is: A

• What will be the resultant if the middle digit of the second largest number is divided by the first digit of the second smallest number?

A. 1

B. 2

C. 3

D. 5

E. None of these

Correct option is: E

• If in each number, the first and the second digits are interchanged, which of the following numbers will come in the middle when arranged in ascending order?

A. 534

B. 762

C. 341

D. 567

E. None of these

Correct option is: D

• If 1 is subtracted from the last digit of each of the numbers, how many numbers will be divisible by 4?

A. 1

B. 2

C. 3

D. 4

E. None of these

Correct option is: B

Directions (1 -5): Study the following information to answer the given questions:

% R 3 6 M @ 5 S B W 9 C \$ 12 T * 15 L K # H 4 Q D

Step 1 – Those Numbers which is immediately preceded by the symbol and immediately followed by an Alphabet are written from the right end in ascending order.

Step 2 – After completing the step -1, interchanging the Odd number with the previous element in the series to form the step -2

Step 3 – After completing the step – 2, Alphabet which is immediately preceded by a symbol are written between Sixth and Fifth element from the Right end in reverse alphabetical order from left to right.

Step 4 – After completing the step – 3, The first ten element from the left end is written after the last element in series in the reverse order(It means tenth element from the left end is written immediately after the last element

and so on..,)

1. Which of the following element is seventh to the right of the element which is tenth from the left end in step-4?

A. \$

B. *

C. B

D. W

E. 9

Correct option is: E

• If the alphabet which is immediately followed by a constant is changed to next letter in alphabet series in step-4, then how many vowels are present in the newly formed series?

A. 1

B. 2

C. 3

D. 4

None

Correct option is: B

• If all the symbols are removed from the step -3, then which of the following element will be in the middle of the series?

A. 4

B. T

C. K

D. C

E. S

Correct option is: A

• How many numbers are immediately followed and immediately preceded by an alphabet in step -4?

A. 1

B. 2

C. 3

D. None

E. More than three

Correct option is: C

• What is will be the product of the number which is eleventh from the left in step-4 and the number which is Seventeenth from the right end in step-3?

A. 135

B. 75

C. 180

D. 48

E. 108

Correct option is: A

Solution:

Step 1: % R 3 6 M @ S B W 9 C \$ T * L K # H 4 Q D 15 12 5

Step 2: % 3 R 6 M @ S B 9 W C \$ T * L K # H 4 Q 15 D 5 12

Step 3: % 3 R 6 M @ B 9 W C \$ * K # 4 T S L H Q 15 D 5 12

Step 4 : \$ * K # 4 T S L H Q 15 D 5 12 C W 9 B @ M 6 R 3%

Read          the    following   questions carefully and then answer the question given below it.

1. How many such pairs of letters are there in the meaningful word “EMPLOYMENT” each of which has as many letters between them in the word as in the English alphabet?

A. None

B. Two

C. Three

D. One

E. more than three

Correct option is: B

• How many such digits are there in the number 76524983, which after rearranging the digits of the number in ascending order from left to right will remain at the same position as before the rearrangement?

A. One

B. Two

C. Three

D. Four

E. None

Correct option is: A

• Each vowels in the word MACHINERY is replaced by the next letter and consonant is replaced by the previous letter, What is the newly formed word?

A. LBDGHMDQZ

B. LBBGJMFQX

C. LZCGJMDQX

D. NBDGHMFQZ

E. None

Correct option is: B

• If two is subtracted from each odd digit in the number and three is added to each even digit in the number ‘9542763’, how many digits will appear twice in the new number thus formed?

A. None

B. One

C. Two

D. Three

E. Four

Correct option is: C

• If the positions of the first and sixth letters in the word ‘CANDIDATES’ are interchanged, similarly the positions of the second and seventh letters are interchanged and so on, which letter will be the second to the right of the sixth letter from right end?

A. D

B. A

C. N

D. C

E. None of these

Correct option is: B

## Pipes and Cisterns Problems Questions Notes 2021: Download Pipes and Cisterns Problems Notes Study Materials

Every year, they release notifications for several vacant posts, so required people interested in the job can apply for the job. To ace the exam, every candidate needs to prepare for the exam as per the syllabus and information provided in the study materials exclusively for this purpose. To get the study materials that are required, you must download the files provided below. You can click on the links given below to download the files and then study them. We hope you find our resources helpful. Every student who has studied using our study materials finds the exam easy to ace since question banks and solution keys are attached along. Once you’ve mastered the content provided in the study materials we’ve provided for you, you have nothing to worry about when it comes to acing the exam. Use our resources to study well for your exam and get your dream job.

1. Two inlet pipes can fill an empty tank in 15 and 18 hours and one outlet pipe can empty the tank in 20 hours. If all the pipes opened simultaneously, then how many hours required fill the full tank?

A. 11 hours

B. 12 hours

C. 13 hours

D. 9 hours

E. None of these

Correct option is : C

Solution:

If all the pipes are opened simultaneously, then in,

= > (1/15) + (1/18) – (1/20)

= > (12 + 10 – 9)/180

= > 13/180

Required hours = 180/13 = 13 11/13 hours

• Two pipes A and B alone can fill an empty tank in 20 min and 24 min respectively. Two pipes are opened simultaneously, after some time pipe B is closed. In how many minutes after pipe B is closed if the tank was filled in 15 minutes

A. 5 min

B. 6 min

C. 4 min

D. 4.5 min

E. None of these

Correct option is : B

Solution:

15/20+x/24=1

18+x=24=>x=6 minutes

• A tank has a leak which can empty a full tank in 28 minutes. A tap is turned on which can fill 2.5 liters a minutes. The tank now becomes empty in 42 minutes. What is the capacity of the tank?

A. 210 liters

B. 342 liters

C. 250 liters

D. 389 liters

E. None of these

Correct option is : A

Solution:

(1/x)-(1/28) = -(1/42)

(1/x) = (1/28)-(1/42)

(1/x)= 84 min

Capacity of the tank = 84 *2.5 =210 liters

• Two pipes A and B can fill a tank in 15 minutes and 25 minutes respectively. Both pipes are opened together and pipe B isclosed,5 minutes before the tank is filled completely. Calculate the total time required to fill the tank?

A. 11 ¼ min

B. 13 min

C. 12 min

D. 14 min

E. None of these

Correct option is : A

Solution:

Let total capacity = 75 litres (LCM of 15 and 25) A = 5 litres/min

B = 3 litres/min A+B fill 75 litres

A can fill 5*5 = 25 litres in 5 min

But B was closed 5 min before the tank is filled. So A+B together filled (75-25) = 50 litres

50 litres can be filled by A + B in,

= > (50/8) = 6 1/4

Total time = 6 1/4 + 5 = 11 ¼ min

• Pipe P can fill an empty tank in 24 hours and pipe Q can fill the same tank in 16 hours. How many hours required to fill the whole tank, if P and Q fill alternatively doing the work, P begins on first hour?

A. 17

B. 19

C. 18

D. 18

E. None of these

Correct option is : B

Solution:

LCM of 24 and 16 =48 units

1 cycle (2 hours) = 5 units

9th cycle (18 hours) = 45 units 19th hour =2 units

Required no of hours = 18+1+1/3=19 1/3 hours

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1. Pipes p, q and r releases three different solution HNO2, HCL and HI. And these three pipes fill the empty tank in 25minutes, 30minutes and 40 minutes respectively. If all the pipes are opened, what is the ratio of HI in that mixed solution in tank after 5 minutes?

A. 15/59

B. 5/21

C. 7/19

D. 6/21

E. None of these

Correct option is : A

Solution:

Part filled by p , q and r in 5 minutes = 5 (1/25 +1/30 +1/40) = 59/120

Part filled by r alone = 5/40 =1/8

The ratio of HI in mixture = 1/8*(120/59) =15/59

Ratio of HI in solution = 15/59

• Three pipes A, B and C can fill a tank in 10 hours. After working at it together for 3 hours, C is closed and A and B can fill the remaining part in 14 hours. How much time taken by C to fill the tank alone?

A. 18 hours

B. 20 hours

C. 24 hours

D. 22 hours

E. None of these

Correct option is : B

Solution:

Three pipes A, B and C can fill a tank in 8 hours. A, B and C’s 1 hour work=1/10

A, B and C’s 3 hour work= 3/10 Remaining work= 1 – (3/10) = 7/10

The remaining part will be filled by A and B in 14 hours. Then,

= > (7/10) *(A+B) = 14

= > (A+B)’s whole work= 14*(10/7) = 20 hr (A+B)’s 1 hour work= 1/20

A, B and C’s 1 hour work = 1/10

C’s 1 hour work= (A+B+C) – (A+B)

= > (1/10) – (1/20)

= > 1/20

C can fill the tank in 20 hours.

• P, Q and R can fill the tank in 12, 16 and 24 min respectively. All three began to fill the tank together but P and Q left 3 and 4 min respectively before filling the tank. Find the total time taken by all of them to fill the tank?

A. 12 min

B. 16 min

C. 8 min

D. 10 min

E. None of these

Correct option is : C

Solution:

(x-3)/12 + (x-4)/16 + x/24 =1

(4x – 12 + 3x – 12 + 2x)/48 = 1

9x – 24 = 48

9x = 72

X = 8 min

• Pipe B is two times efficient as pipe C. Pipe A and B together can fill an empty tank in 8 4/7 hours. Pipe A and C together can fill the same tank in 12 hours. In how many hours required filling by pipe B alone?

A. 15

B. 12

C. 20

D. 30

E. 10

Correct option is : A

Solution:

Efficiency ratio of B and C =2:1

Time ratio of B and C = 1:2

Given,

(1/A+1/B)- (1/A+1/C) =7/60-1/12

1/B-1/C=2/60=1/30

1/x-1/2x=1/30

=>1/2x=1/30

1/x=1/15

• Pipe A and B can fill an empty tank in 8 hours. Pipe B and C together can fill the same tank in 9 3/5 hours. Pipe A opened for first one hour, Pipe B opened for second one hour and pipe C opened for third one hour and this process is repeated until the tank filled completely. How many hours required filling half of the tank if A is twice efficient as B?

A. 10 hrs

B. 12 hrs

C. 6 hrs

D. 9 hrs

E. 8 hrs

Correct option is : E

Solution:

Efficiency ratio of A and B = 2:1 and time ratio of A and B = 1:2

1/x+1/2x=1/8 3/2x=1/8=>x=12 hours

A= 12 hrs B= 24 hrs C= 16 hrs

LCM of 12, 24 and 16 =48 units

1st cycle (3 hrs) = 4+2+3=9 units

Half of the tank 24 units filled in 8 hrs

1. A cistern can be filled by three pipes A, B and C alone12hrs, 24hrs and 48 hrs respectively. There is an opening D in the cistern that empties the cistern at the rate of 6m/hr. If the cistern is 96m deep then, in how much time will it be filled upto 72hrs of its depth if all the pipes are opened together at the start but B is closed after an hour.

A. 17 hrs

B. 20 hrs

C. 10 hrs

D. 12 hrs

E. None of these

Correct option is : A

Solution:

Tank filled by A alone in 1 hr = 1/12

Tank filled by B alone in 1 hr = 1/24

Tank filled by C alone in 1 hr = 1/48

D empty the tank at the rate of 6m/hr

So,

Tank empty by D in 1hr = 6/96 = 1/16

Now, tan is to be filled upto 72m i.e., 72/96 =3/4 of tank

So, Let the 3/4th of the tank to be filled in ‘t’ hours time

For 1 hr all are opened then B closed

So, for (t – 1) hr A,C and D opened

(1/12 + 1/24+ 1/48 – 1/16) + (t -1) (1/12 + 1/48 – 1/16) = ¾

(1/12) + (t – 1) (1/24) = ¾

t  = 17hrs

• A Tank is filled with the mixture of Milk and Water in the ratio of 3:2 up to 2/5 of its capacity. The tank has two inlet pipes i.e., Milk and Water inlets. Milk and Water pipe can fill an empty tank in 12 and 18 hours respectively. Now both pipes are opened simultaneously and closed after the Tank is completely filled, then what is the ratio of Milk and Water in the full Tank if it can accommodate 250Litre?
A. 1:1
B. 2:3
C. 3:2
D. 5:4
E. None

Correct option is : C

Solution:

Initial Milk = 2/5*250*3/5 = 60 L
Water = 2/5*250*2/5 = 40 L
Rest of Tank =150 L
Pipes are opened then can fill rest of tank in 108/25 hours
H/W = constant
then (108/25)/12/x = (108/25)/18(150-x)
X = 90 = Milk, Water = 60
Final ratio = 3:2

• A Special pump can be used for filling as well as for emptying a Cistern. The capacity of the Cistern is 2400m³. The emptying capacity of the Cistern is 10m³ per minute higher than its filling capacity and the pump needs 8 minutes lesser to Cistern the tank than it needs to fill it. What is the filling capacity of the pump?
A. 40m³/min
B. 50m³/min
C. 60m³/min
D. 30m³/min
E. None of the Above

Correct option is : B

Solution:

Filling Capacity of the Pump = x m/min
Emptying Capacity of the pump = (x+10) m/min
2400/x – 2400/x+10 = 8
(x – 50) + (x + 60) = 0
x = 50

• A Cistern has an inlet pipe and outlet pipe. The inlet pipe fills the cistern completely in 1 hour 20 minutes when the outlet pipe is plugged. The outlet pipe empties the tank completely in 6 hours when the inlet pipe is plugged. If there is a leakage also which is capable of draining out the water from the tank at half of the rate of the outlet pipe, then what is the time taken to fill the empty tank when both the pipes are opened?
3 hours
B. 2 hours
C. 5 hours
D. 4 hours
E. None of the Above

Correct option is : B

Solution:

Inlet pipe Efficiency = 100/(8/6) = 75%
Outlet pipe Efficiency = 100/(6) = 16.66%
Efficiency of leakage = half of the rate of the outlet pipe = 8.33%
Net Efficiency = 75 – (16.66 + 8.33) = 50%
Required time = 100/50 = 2 hours

• Three pipes A, B, and C can fill the tank in 10 hours, 20 hours and 40 hours respectively. In the beginning all of them are opened simultaneously. After 2 hours, tap C is closed and A and B are kept running. After the 4th hour, tap B is also closed. The remaining work is done by tap A alone. What is the percentage of the work done by tap A alone?
30 %
B. 35 %
C. 45 %
D. 50 %
E. None of the Above

Correct option is : B

Solution:

Pipe A’s work in % = 100/10 = 10%
Pipe B’s work in % = 100/20 = 5%
Pipe C’s work in % = 100/40 = 2.5%
All of them are opened for 2 hours + after 2 hours, tap C is closed + After the 4th hour, tap B is also closed = 100
=> (10+5+2.5)*2 + (10+5)*2 + X = 100
=> 35 + 30 + work by tap A alone = 100
=> work by tap A alone = 100-65 = 35%