Number, Ranking and Time Sequence Test Questions and Answers

Q: In a queue, Amrita is 10th from the front while Mukul is 25th from behind and Mamta is just in the middle of the two. If there were 50 persons in the queue, what position does Mamta occupy from the front?

Correct answer: 18thMukul is 25th from behind in a queue of 50, so he is $ 50 - 25 + 1 = 26 $th from the front. Mamta stands midway between Amrita at 10 and Mukul at 26: \[ \frac{10 + 26}{2} = \mathbf{18} \text{th from the front} \]

Q: Sam ranked 9th from the top and 38th from the bottom in a class. How many students are there in the class ?

Correct answer: 46Sam is counted from both ends, so the class holds \[ 9 + 38 - 1 = \mathbf{46} \] students.

Q: In a row of trucks, Ashok is at 17th position from the left end. Bharat is 19 places to the right from Ashok and is at the exact centre of the row. How many trucks are there to the right of Ashok truck?

Correct answer: 54Bharat stands 19 places right of Ashok’s 17th place, so Bharat is 36th from the left. Being at the exact centre, he has as many trucks on each side, so the row holds $ 2 \times 36 - 1 = 71 $. To Ashok’s right there are then \[ 71 - 17 = \mathbf{54} \]

Q: If the third day of a month is Tuesday, which of the following would be the 4th day before the 27th day of that month?

Correct answer: MondayIf the 3rd is a Tuesday, the 27th is 24 days later, and $ 24 = 21 + 3 $, so it falls three days on from Tuesday - a Friday. The fourth day before it is the 23rd, which is four days back from Friday: Monday.

Q: In a row of thirty boys, R is fourth from the right end and W is tenth from the left end . How many boys are there between R and W?

Correct answer: 16R is 4th from the right of thirty, so he is $ 30-4+1 = 27 $th from the left. Between the 10th and the 27th place there are \[ 27 - 10 - 1 = \mathbf{16} \] boys.

Q: Sangeeta remembers that her father’s birthday was certainly after eighth but before thirteenth of December. Her sister Natasha remembers that their father’s birthday was definitely after ninth but before fourteenth of December. On which date of December was their father’s birthday?

Correct answer: Data inadequateSangeeta allows the 9th to the 12th and Natasha the 10th to the 13th. Three dates - the 10th, 11th and 12th - satisfy both, so the birthday cannot be pinned down: the data are inadequate.

Q: Read the arrangement carefully and give the answer of following questions ? K$23DBE8HM4@5JF4%K1+WR#AA*415 How many such symbols are there which is not immediately preceded by a letter but immediately followed by a number ?

Correct answer: 1Going along the arrangement and keeping only those symbols that have a letter after them but not before them, exactly one qualifies; every other symbol fails one of the two tests.

Q: Which is the third number to the left of the number which is exactly in the middle of the following sequence of numbers? 1 2 3 4 5 6 7 8 9 2 4 6 8 9 7 5 3 1 9 8 7 6 5 4 3 2 1

Correct answer: 4The sequence holds 27 numbers, so the middle one is the 14th, which is 9. Three places to its left is the 11th number, 4.

Q: A class of boys stands in a single line, One boy is 19th in order from both the ends, How many boys are there in the class ?

Correct answer: 37The boy is counted from both ends, so the class holds \[ 19 + 19 - 1 = \mathbf{37} \] boys.

Q: Ravi is 7 ranks ahead of Sumit in a class of 39. If Sumit’s rank is seventeenth from the last, what is Ravi’s rank from the start?

Correct answer: 16thSumit is 17th from the last in a class of 39, so he is $ 39 - 17 + 1 = 23 $rd from the start. Ravi is seven ranks ahead of him: \[ 23 - 7 = \mathbf{16} \text{th} \]

Important Instructions

61.

In a queue, Amrita is 10th from the front while Mukul is 25th from behind and Mamta is just in the middle of the two. If there were 50 persons in the queue, what position does Mamta occupy from the front?

A.20th
B.19th
C.18th
D.17th

Answer: C

Correct answer: 18th

Mukul is 25th from behind in a queue of 50, so he is $ 50 - 25 + 1 = 26 $th from the front. Mamta stands midway between Amrita at 10 and Mukul at 26: \[ \frac{10 + 26}{2} = \mathbf{18} \text{th from the front} \]

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62.

Sam ranked 9th from the top and 38th from the bottom in a class. How many students are there in the class ?

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

Answer: C

Correct answer: 46

Sam is counted from both ends, so the class holds \[ 9 + 38 - 1 = \mathbf{46} \] students.

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63.

In a row of trucks, Ashok is at 17th position from the left end. Bharat is 19 places to the right from Ashok and is at the exact centre of the row. How many trucks are there to the right of Ashok truck?

A.53
B.54
C.52
D.19

Answer: B

Correct answer: 54

Bharat stands 19 places right of Ashok’s 17th place, so Bharat is 36th from the left. Being at the exact centre, he has as many trucks on each side, so the row holds $ 2 \times 36 - 1 = 71 $. To Ashok’s right there are then \[ 71 - 17 = \mathbf{54} \]

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64.

If the third day of a month is Tuesday, which of the following would be the 4th day before the 27th day of that month?

A.Tuesday
B.Monday
C.Wednesday
D.Sunday

Answer: B

Correct answer: Monday

If the 3rd is a Tuesday, the 27th is 24 days later, and $ 24 = 21 + 3 $, so it falls three days on from Tuesday - a Friday. The fourth day before it is the 23rd, which is four days back from Friday: Monday.

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65.

In a row of thirty boys, R is fourth from the right end and W is tenth from the left end . How many boys are there between R and W?

A.15
B.16
C.17
D.can't be determined

Answer: B

Correct answer: 16

R is 4th from the right of thirty, so he is $ 30-4+1 = 27 $th from the left. Between the 10th and the 27th place there are \[ 27 - 10 - 1 = \mathbf{16} \] boys.

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66.

Sangeeta remembers that her father’s birthday was certainly after eighth but before thirteenth of December. Her sister Natasha remembers that their father’s birthday was definitely after ninth but before fourteenth of December. On which date of December was their father’s birthday?

A.10th
B.11th
C.12th
D.Data inadequate

Answer: D

Correct answer: Data inadequate

Sangeeta allows the 9th to the 12th and Natasha the 10th to the 13th. Three dates - the 10th, 11th and 12th - satisfy both, so the birthday cannot be pinned down: the data are inadequate.

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67.

Read the arrangement carefully and give the answer of following questions ?

K$23DBE8HM4@5JF4%K1+WR#AA*415

How many such symbols are there which is not immediately preceded by a letter but immediately followed by a number ?

Answer: A

Correct answer: 1

Going along the arrangement and keeping only those symbols that have a letter after them but not before them, exactly one qualifies; every other symbol fails one of the two tests.

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68.

Which is the third number to the left of the number which is exactly in the middle of the following sequence of numbers?

1 2 3 4 5 6 7 8 9 2 4 6 8 9 7 5 3 1 9 8 7 6 5 4 3 2 1

Answer: C

Correct answer: 4

The sequence holds 27 numbers, so the middle one is the 14th, which is 9. Three places to its left is the 11th number, 4.

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69.

A class of boys stands in a single line, One boy is 19th in order from both the ends, How many boys are there in the class ?

A.37
B.39
C.27
D.38

Answer: A

Correct answer: 37

The boy is counted from both ends, so the class holds \[ 19 + 19 - 1 = \mathbf{37} \] boys.

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70.

Ravi is 7 ranks ahead of Sumit in a class of 39. If Sumit’s rank is seventeenth from the last, what is Ravi’s rank from the start?

A.14th
B.15th
C.16th
D.17th

Answer: C

Correct answer: 16th

Sumit is 17th from the last in a class of 39, so he is $ 39 - 17 + 1 = 23 $rd from the start. Ravi is seven ranks ahead of him: \[ 23 - 7 = \mathbf{16} \text{th} \]

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