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If (N)(10) = (ab)(n) and (3N)(10) = (ba)...

If `(N)_(10) = (ab)_(n) and (3N)_(10) = (ba)_(n)` , where `3 < n < 10`, then the least possible value of n is :

A

4

B

6

C

7

D

can't be determined

Text Solution

Verified by Experts

The correct Answer is:
C
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