Tag: math & puzzles

Questions Related to math & puzzles

Two-fifths of the voters promise to vote for P and the rest promise to vote for Q. Of these, on the last day, 15% of the voters went back on their promise to vote for P and 25% of voters went back of their promise to vote for Q, and P lost by 2 votes. Then the total number of voters is:

general knowledge math & puzzles

  1. 100

  2. 110

  3. 90

  4. 95

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Correct Option: B

Two positive integers differ by 4 and the sum of their reciprocals is 10/21. One of the numbers is:
general knowledge math & puzzles

  1. 3

  2. 1

  3. 5

  4. 21

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Correct Option: A

56 - 1 is divisible by
general knowledge math & puzzles

  1. 13

  2. 31

  3. 5

  4. None of these

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Correct Option: B

The sides of a triangle are 5, 12 and 13 units respectively. A rectangle is constructed which is equal in area to the triangle and has a width of 10 units. Then the perimeter of the rectangle is
general knowledge math & puzzles

  1. 30

  2. 26

  3. 13

  4. None of these

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Correct Option: B

Which one of the following cannot be the ratio of angles in a right-angled triangle?
general knowledge math & puzzles

  1. 1:2:3

  2. 1:1:3

  3. 1 : 3 : 6

  4. None of these

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Correct Option: B

Three bells chime at an interval of 18, 24 and 32 minutes respectively. At a certain time they begin to chime together. What length of time will elapse before they chime together again?
general knowledge math & puzzles

  1. 2 hours 24 minutes

  2. 4 hours 48 minutes

  3. 1 hour 36 minutes

  4. 5 hours

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Correct Option: B

A, B, C and D are four towns, any three of which are non -collinear. The number of ways to construct three roads each joining a pair of towns so that the roads do not form a triangle is:
general knowledge math & puzzles

  1. 7

  2. 8

  3. 9

  4. more than 9

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Correct Option: D

The remainder obtained when a prime number greater than 6 is divided by 6 is:
general knowledge math & puzzles

  1. 1 or 3

  2. 1 or 5

  3. 3 or 5

  4. 4 or 5

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Correct Option: A

In a race of 200 meters, A beats S by 20 meters and N by 40 metres. If S and N are running a race of 100 metres with exactly the same speed as before, then by how many metres will S beat N?

general knowledge math & puzzles

  1. 11.11 metres

  2. 10 metres

  3. 12 metres

  4. 25 metres

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Correct Option: D

Boxes numbered 1, 2, 3, 4, and 5 are kept in a row, and they are to be filled with either a red or a blue ball, such that no two adjacent boxes can be filled with blue balls. How many different arrangements are possible, given that all balls of a given colour are exactly identical in all respects?
general knowledge math & puzzles

  1. 8

  2. 10

  3. 15

  4. 22

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Correct Option: D