Tag: math & puzzles

Questions Related to math & puzzles

A book costs 1$ and a half of the price of the book. How much does it cost?

general knowledge math & puzzles

  1. 2.5$

  2. 1$

  3. 2$

  4. 1.5$

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Correct Option: C

When Tom's father was 31 years old, Tom was 8 years old. Now his father is twice Tom's age. How old is Tom now?
general knowledge math & puzzles

  1. 21

  2. 22

  3. 23

  4. 24

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Correct Option: C

A boy has as many sisters as brothers and his sister has half as many sisters than brothers. How many boys and girls are in the family?
general knowledge math & puzzles

  1. 4 & 3

  2. 4 & 4

  3. 3 & 3

  4. 3 & 4

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Correct Option: A

Mary loves dogs. Her friends asked her how many dogs she has. She answered: "3/4 of their number and 3/4 of a dog". So, how many dogs she has?(Dog is an animal:)))
general knowledge math & puzzles

  1. 1

  2. 2

  3. 3

  4. 4

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Correct Option: C
Explanation:

To solve this problem, we can set up an equation.

Let "x" be the number of dogs Mary has.

According to the given information, Mary has "3/4" of the number of dogs she has, which can be represented as (3/4)x.

She also has "3/4" of a dog, which can be represented as (3/4)(1) = 3/4.

So, we can set up the equation: (3/4)x + 3/4 = x.

To solve for x, we need to find the common denominator and then solve the equation.

Multiplying both sides of the equation by 4, we get: 3x + 3 = 4x.

Subtracting 3x from both sides of the equation, we get: 3 = x.

Therefore, Mary has x = 3 dogs.

So, the correct answer is:

C. 3

If at 12:00 am is raining in San Diego, could there be sunny weather in exactly 72 hours?
general knowledge math & puzzles

  1. yes

  2. No

  3. Maybe

  4. How do I know

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Correct Option: B

Think of a number greater than 0. Multiply by 2; add 5; multiply by 3; subtract the number you've thought of; divide by 5; subs tract the number again. The result is:
general knowledge math & puzzles

  1. 4

  2. 3

  3. 2

  4. 1

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Correct Option: B

Put a math symbol between 2 and 3 to get a number bigger than 2 and smaller than 3.
general knowledge math & puzzles

  1. *

  2. /

  3. .

  4. -

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Correct Option: C

A train moves off from London to Birmingham with speed 70km/h and another one from Birmingham to London with speed 100km/h. Which one will be closer to London when they meet? (Ignore the length of the trains, consider them as moving points.)
general knowledge math & puzzles

  1. a

  2. b

  3. Neither

  4. Both

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Correct Option: C

What is the Lt of (sinx/n) as n->0
general knowledge math & puzzles

  1. 1

  2. 0

  3. infinity

  4. none

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Correct Option: D

J,F,M,A, _

general knowledge math & puzzles

  1. Z

  2. M

  3. S

  4. D

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Correct Option: B