Number, Ranking and Time Sequence Test Questions and Answers

Q: In the following list of numerals, how many 2’s are followed by l’s but not preceded by 4? 4 2 1 2 1 4 2 1 1 2 4 4 4 1 2 2 1 2 1 4 4 2 1 4 2 1 2 1 2 4 1 4 2 1 2 4 1 4 6

Correct answer: FourGoing through the list, four of the 2s are immediately followed by a 1 and are not immediately preceded by a 4. The rest fail one test or the other - either a 4 stands before them or something other than 1 follows. So the answer is four.

Q: Rajan is sixth from the left end and vinay is tenth from the right end in a row of boys. If there are eight boys between Rajan and Vinay, how many boys are there in the row ?

Correct answer: 24Rajan is 6th from the left, eight boys stand between him and Vinay, and Vinay is 10th from the right, so the row holds \[ 6 + 8 + 10 = \mathbf{24} \] boys.

Q: In a row of people Manu is 7th from bottom end of row. Shrey is 10 ranks above Manu. If Shrey is 8th from top end, then how many people are there in this row?

Correct answer: 24Shrey is 8th from the top and Manu ten ranks below him, so Manu is 18th from the top. Manu is also 7th from the bottom, so the row holds \[ 18 + 7 - 1 = \mathbf{24} \] people.

Q: In a row of boys, Rahul is 19th from top and Ajay is 21st from bottom. They interchange their position. Ajay now becomes 28th from bottom. Howmany total boys are there in the row?

Correct answer: 46After the exchange Ajay stands where Rahul stood, and he is then 28th from the bottom - so Rahul’s place was 28th from the bottom and 19th from the top: \[ 28 + 19 - 1 = \mathbf{46} \]

Q: Raman ranks sixteenth from the top and forty-ninth from the bottom in a class. How many students are there in the class ?

Correct answer: 64Raman is counted from both ends, so the class holds \[ 16 + 49 - 1 = \mathbf{64} \] students, the 1 being subtracted because Raman himself is counted twice.

Q: How many such digits are there in the number 7346285 which are as far away from the beginning of the number, as they will be when arranged in ascending order within the number?

Correct answer: TwoArranged in ascending order the digits of 7346285 run 2, 3, 4, 5, 6, 7, 8. Comparing position by position, only 3 (second in both) and 4 (third in both) keep their places - so the answer is two.

Q: A bus for Delhi leaves every thirty minutes from a bus stand. An enquiry clerk told a passenger that the bus had already left ten minutes ago and the next bus will leave at 9.35 a.m. At what time did the enquiry clerk give this information to the passenger?

Correct answer: 9.15 a.m.Buses leave every thirty minutes, so the one before the 9.35 bus left at 9.05. That bus had gone ten minutes earlier, which puts the conversation at \[ 9.05 + 10\text{ min} = \mathbf{9.15\ a.m.} \]

Q: Six friends A, B, C, D, E and F joined an institute in the year 1993 but on different days. Only E has joined after C and D. C joined immediately before A and immediately after B. F is not the first or the last person to join. D will not be in any corner. Who is the first person joining the Institute?

Correct answer: BE alone joined after C and D, so E was last. B, C and A joined in that order without a break, and neither D nor F could take a corner place, which leaves only one arrangement: B, C, A, then D and F, then E. So B joined first.

Important Instructions

111.

In the following list of numerals, how many 2’s are followed by l’s but not preceded by 4?

4 2 1 2 1 4 2 1 1 2 4 4 4 1 2 2 1 2 1 4 4 2 1 4 2 1 2 1 2 4 1 4 2 1 2 4 1 4 6

A.Two
B.Three
C.Four
D.Five

Answer: C

Correct answer: Four

Going through the list, four of the 2s are immediately followed by a 1 and are not immediately preceded by a 4. The rest fail one test or the other - either a 4 stands before them or something other than 1 follows. So the answer is four.

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112.

Rajan is sixth from the left end and vinay is tenth from the right end in a row of boys. If there are eight boys between Rajan and Vinay, how many boys are there in the row ?

A.24
B.26
C.23
D.25

Answer: A

Correct answer: 24

Rajan is 6th from the left, eight boys stand between him and Vinay, and Vinay is 10th from the right, so the row holds \[ 6 + 8 + 10 = \mathbf{24} \] boys.

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113.

In a row of people Manu is 7th from bottom end of row. Shrey is 10 ranks above Manu. If Shrey is 8th from top end, then how many people are there in this row?

A.25
B.26
C.24
D.23

Answer: D

Correct answer: 24

Shrey is 8th from the top and Manu ten ranks below him, so Manu is 18th from the top. Manu is also 7th from the bottom, so the row holds \[ 18 + 7 - 1 = \mathbf{24} \] people.

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114.

In a row of boys, Rahul is 19th from top and Ajay is 21st from bottom. They interchange their position. Ajay now becomes 28th from bottom. Howmany total boys are there in the row?

A.47
B.46
C.45
D.48

Answer: B

Correct answer: 46

After the exchange Ajay stands where Rahul stood, and he is then 28th from the bottom - so Rahul’s place was 28th from the bottom and 19th from the top: \[ 28 + 19 - 1 = \mathbf{46} \]

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115.

In the number 76534218 each digit is replaced next digit, ie '1' is replaced by '2' , '2' is replaced by '3' and so on and then the digits are arranged in ascending order from left to right, which digit will be fifth from the left end?

Answer: A

Given Number : 7 6 5 3 4 2 1 8

New Number : 8 7 6 4 5 3 2 9

Ascending Order : 2 3 4 5 6 7 8 9

Fifth digit in the above ascending order arrangement is '6' . Hence option(1) is the correct answer.

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116.

Raman ranks sixteenth from the top and forty-ninth from the bottom in a class. How many students are there in the class ?

A.64
B.65
C.66
D.Cannot be determined

Answer: A

Correct answer: 64

Raman is counted from both ends, so the class holds \[ 16 + 49 - 1 = \mathbf{64} \] students, the 1 being subtracted because Raman himself is counted twice.

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117.

How many such digits are there in the number 7346285 which are as far away from the beginning of the number, as they will be when arranged in ascending order within the number?

A.None
B.one
C.Two
D.Three

Answer: C

Correct answer: Two

Arranged in ascending order the digits of 7346285 run 2, 3, 4, 5, 6, 7, 8. Comparing position by position, only 3 (second in both) and 4 (third in both) keep their places - so the answer is two.

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118.

What is the 13th letter of the English Alphabet?

A.M & N
B.M & M
C.N & N
D.N & L

Answer: A

There are 26 English Alphabets. They are:

A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z.

Therefore, from the left end the 13th letter is M and is Consonent. And from the right end the 13th letter is N and is Consonent.

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119.

A bus for Delhi leaves every thirty minutes from a bus stand. An enquiry clerk told a passenger that the bus had already left ten minutes ago and the next bus will leave at 9.35 a.m. At what time did the enquiry clerk give this information to the passenger?

A.9.10 a.m.
B.8.55 a.m.
C.9.08 p.m.
D.9.15 a.m.

Answer: D

Correct answer: 9.15 a.m.

Buses leave every thirty minutes, so the one before the 9.35 bus left at 9.05. That bus had gone ten minutes earlier, which puts the conversation at \[ 9.05 + 10\text{ min} = \mathbf{9.15\ a.m.} \]

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120.

Six friends A, B, C, D, E and F joined an institute in the year 1993 but on different days. Only E has joined after C and D. C joined immediately before A and immediately after B. F is not the first or the last person to join. D will not be in any corner.
Who is the first person joining the Institute?

Answer: D

Correct answer: B

E alone joined after C and D, so E was last. B, C and A joined in that order without a break, and neither D nor F could take a corner place, which leaves only one arrangement: B, C, A, then D and F, then E. So B joined first.

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