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If the integers m and n are chosen at ra...

If the integers m and n are chosen at random between 1 and 100, then the probability that a number of the form `7^m+7^n` is divisible by 5, equals (a) `1/4` (b) `1/7` (c) `1/8` (d) `1/49`

A

`1/4`

B

`1/7`

C

`1/8`

D

`1/49`

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KVPY PREVIOUS YEAR-MOCK TEST 5-EXERCISE
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  7. The probability that the graph of y=16x^2 +8(a +5)x-7a-5=0, is strictl...

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  8. Let f:R->R and g:R->R be two one-one and onto functions such that they...

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  11. If f(x)={(([x]-1)/(x-1), x ne 1),(0, x=1):} then f(x) is

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  13. If x , y, z in R, x + y + z= 4 and x^(2) + y^(2) + z^(2) = 6, then the...

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  16. The int(tan^-1 alpha)^(cot^-1 alpha) (tanx)/(tanx+cotx)dx alpha in R c...

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  17. Let f(x) =[x]+|1-x|,-1lex< 3,(here [.] denotes greatest integer functi...

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