Tag: math & puzzles

Questions Related to math & puzzles

5,52,521,526,?
general knowledge math & puzzles

  1. 5210

  2. 5213

  3. 5215

  4. 5218

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Correct Option: B

1,2,9,64,625,?
general knowledge math & puzzles

  1. 189

  2. 625

  3. 7776

  4. 149

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Correct Option: C

2,6,12,?,30
general knowledge math & puzzles

  1. 21

  2. 20

  3. 22

  4. 23

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Correct Option: B

0,1,3,6,?,15
general knowledge math & puzzles

  1. 10

  2. 11

  3. 12

  4. 13

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Correct Option: A

1^2+2^2+3^2=?
general knowledge math & puzzles

  1. n(n+1)/2

  2. n(n+1)(2n+1)/6

  3. [n(n+1)]^2

  4. all of the above

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Correct Option: B

a^3+b^3+c^3-3abc =?
general knowledge math & puzzles

  1. (a+b+c)(a^2+b^2+c^2-ab-bc-ca)

  2. (a^2+b^2+c^2-ab-bc-ca)

  3. (a^2+b^2+c^2+ab+bc+ca)

  4. none of these

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Correct Option: A

(a+b+c)^2
general knowledge math & puzzles

  1. (a^2+b^2+c^2)

  2. (a^2+b^2+c^2+ab+bc+ca)

  3. all of these

  4. (a^2+b^2+c^2+2ab+2bc+2ca)

Show answer
Correct Option: C

cos0*cos1*cos2*cos3*......cos99? what is the value?0,1,2... all are in degree
general knowledge math & puzzles

  1. 90

  2. 1

  3. 0

  4. none of these

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Correct Option: C

10,40,90,61,? what is next number?
general knowledge math & puzzles

  1. 70

  2. 91

  3. 34

  4. 52

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Correct Option: D

Brian takes the underground train to work and uses an escalator at the railway station. If Brian runs up 6 steps of the escalator, then it takes him 39.0 seconds to reach the top of the escalator. If he runs up 13 steps of the escalator, then it takes him only 28.5 seconds to reach the top. How many seconds would it take Brian to reach the top if he did not run up any steps of the escalator at all?
general knowledge math & puzzles

  1. 20

  2. 34

  3. 48

  4. 23

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Correct Option: C