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Question
6n cannot end with digit 5 for ______ value of n.
Fill in the Blanks
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Solution
6n cannot end with digit 5 for any value of n.
Explanation:
If 6n ended with 5 it would be divisible by 5, but 6n = (2 × 3)n has only primes 2 and 3 in its factorization and never contains a factor 5. Hence no n makes 6n end with 5.
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