## contest R2 Q15

(3^2n) – 1 is divisible by 2^(n+3) for what value of n : a) 1 b) 2 c) 3 d) none

7 Replied
## contest R2 Q14

find the digit at ten’s place of number N = 7^281*3^264 ? (a) 0 (b) 1 (c) 6 (d) 5

6 Replied
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(3^2n) – 1 is divisible by 2^(n+3) for what value of n : a) 1 b) 2 c) 3 d) none

7 Replied
find the digit at ten’s place of number N = 7^281*3^264 ? (a) 0 (b) 1 (c) 6 (d) 5

6 Replied