Question

Question 7 ,Please answer this fast

Answer 1

no 6 n cannot be a natural number end with 5 as

6*6=36

6*6*6=216

and so onnnn

so, 6n cannot end with 5 but only ends with 6.

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Answer 2

if number 6n were to end with digit 5 , then it would have 5 as it's prime factor

but prime factorisation of 6n is 2×3. And this prime factorisation is guaranteed by fundamental theorem of arithmetic. therefore there is no natural number n for which 6n will end with digit 5