Tag: math & puzzles

Quizzes (226) Questions (4539)

Questions Related to math & puzzles

Multiple choice general knowledge math & puzzles

5,52,521,526,?

5210
5213
5215
5218

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Multiple choice general knowledge math & puzzles

1,2,9,64,625,?

189
625
7776
149

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Multiple choice general knowledge math & puzzles

2,6,12,?,30

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Multiple choice general knowledge math & puzzles

0,1,3,6,?,15

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Multiple choice general knowledge math & puzzles

1^2+2^2+3^2=?

n(n+1)/2
n(n+1)(2n+1)/6
[n(n+1)]^2
all of the above

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Multiple choice general knowledge math & puzzles

a^3+b^3+c^3-3abc =?

(a+b+c)(a^2+b^2+c^2-ab-bc-ca)
(a^2+b^2+c^2-ab-bc-ca)
(a^2+b^2+c^2+ab+bc+ca)
none of these

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Multiple choice general knowledge math & puzzles

(a+b+c)^2

(a^2+b^2+c^2)
(a^2+b^2+c^2+ab+bc+ca)
all of these
(a^2+b^2+c^2+2ab+2bc+2ca)

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Multiple choice general knowledge math & puzzles

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

90
1
0
none of these

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Multiple choice general knowledge math & puzzles

10,40,90,61,? what is next number?

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Multiple choice general knowledge math & puzzles

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?

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