Tag: math & puzzles

Questions Related to math & puzzles

"My grandson is about as many days as my son is weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 100 years. Can you tell me my age in years?"

general knowledge math & puzzles

  1. 78

  2. 80

  3. 50

  4. 60

Show answer
Correct Option: D

A train of 77m length is running at a speed of 60 km/hour. If it crosses a bridge in 30 seconds, then find the length of the bridge.
general knowledge math & puzzles

  1. 403 m

  2. 423 m

  3. 412 m

  4. 396 m

Show answer
Correct Option: B

? X 147 = 6909

general knowledge math & puzzles

  1. 37

  2. 47

  3. 27

  4. 67

Show answer
Correct Option: B
Explanation:

To solve this question, the user needs to know basic arithmetic and the concept of multiplication. The user must divide 6909 by 147 to find the correct answer.

We can solve the equation as follows:

X * 147 = 6909

X = 6909 / 147

X = 47

Therefore, the correct answer is option B.

Explanation for each option:

A. 37: This option is incorrect because it is the result of dividing 6909 by 187 instead of 147.

B. 47: This option is correct because it is the result of dividing 6909 by 147.

C. 27: This option is incorrect because it is the result of dividing 6909 by 257 instead of 147.

D. 67: This option is incorrect because it is the result of dividing 6909 by 167 instead of 147.

The Answer is: B

1000 X 45% /10=?

general knowledge math & puzzles

  1. 35

  2. 45

  3. 3.5

  4. 4.5

Show answer
Correct Option: B
Explanation:

To solve this problem, the user needs to know basic arithmetic and the concept of percentages and division. The user must multiply 1000 by 45%, then divide the result by 10.

First, let's calculate 1000 multiplied by 45%: 1000 x 45% = 1000 x 0.45 = 450

Next, let's divide 450 by 10: 450 / 10 = 45

Therefore, the answer is 45, which is option B.

Option A (35) is incorrect because it is not the correct result of the calculation.

Option B (45) is correct because it is the result of the calculation.

Option C (3.5) is incorrect because it is not the correct result of the calculation.

Option D (4.5) is incorrect because it is not the correct result of the calculation.

The Answer is: B. 45

The value of a machine depreciates at the rate of 12 percent per annum. It was purchased three years ago. Its present value is Rs. 29644.032, what was the purchase price of the machine?

general knowledge math & puzzles

  1. Rs 48,700

  2. Rs 38,900

  3. Rs 43,500

  4. 39000

Show answer
Correct Option: C

A fort has provision for 50 days if after 10 days they are strengthen by 500 men and the remaining food lasts 35 days. How many men were there in the fort initially?
general knowledge math & puzzles

  1. 3500

  2. 3000

  3. 2500

  4. 4000

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Correct Option: A

A number exceeds 20% of itself by 40 then the number is _____

general knowledge math & puzzles

  1. 50

  2. 60

  3. 80

  4. 320

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Correct Option: A

A man divided some money to his three sons in the ratio of 4:3:5. If the lowest money of the three is Rs.12000. Find the total Money.
general knowledge math & puzzles

  1. Rs.36000

  2. Rs.42000

  3. Rs.48000

  4. Rs.60000

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Correct Option: C

The least perfect square number which is divisible by 3,4,5,6 and 8

general knowledge math & puzzles

  1. 900

  2. 1200

  3. 2500

  4. 3600

Show answer
Correct Option: D

HCF of three numbers is 12.Their ratio is 1 : 2 : 3 the numbers are _______

general knowledge math & puzzles

  1. 12,24,36

  2. 10,20,30

  3. 5,10,15

  4. 4,8,12

Show answer
Correct Option: A