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How many positive integers a less than 100 are there for which 2.3^(6n) + a.2^(3n+1) - 1 is divisible for by 7 for all positive integral values of n? |
| Answer» How many positive integers a less than 100 are there for which 2.3^(6n) + a.2^(3n+1) - 1 is divisible for by 7 for all positive integral values of n? | |