Tag: math & puzzles

Questions Related to math & puzzles

A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

general knowledge math & puzzles

  1. 7.2

  2. 3.6

  3. 10

  4. 8.4

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Correct Option: B

The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, then the value of x is:
general knowledge math & puzzles

  1. 12

  2. 15

  3. 16

  4. 18

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Correct Option: C

4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it?

general knowledge math & puzzles

  1. 45

  2. 35

  3. 50

  4. 40

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Correct Option: D

Derivative of x =
general knowledge math & puzzles

  1. 0

  2. x

  3. n

  4. 1

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Correct Option: D

Derivative of sec x =

general knowledge math & puzzles

  1. csc x cot x

  2. -csc x cot x

  3. sec x tan x

  4. -sec x tan x

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Correct Option: C

Derivative of cos x =

general knowledge math & puzzles

  1. -cos x

  2. -sin x

  3. cos x

  4. sin x

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Correct Option: B

Derivative of tan x =
general knowledge math & puzzles

  1. sec2 x

  2. csc2 x

  3. -csc2 x

  4. -sec2 x

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Correct Option: A

Find the Roman number for number: 51

general knowledge math & puzzles

  1. IL

  2. LX

  3. LI

  4. XL

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Correct Option: C

Find the Roman number for number: 49
general knowledge math & puzzles

  1. XXLI

  2. XLIX

  3. XILX

  4. XL

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Correct Option: B

Find the Roman number for number: 99
general knowledge math & puzzles

  1. XXCI

  2. XC

  3. XICX

  4. XCIX

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Correct Option: D