Question

show that no.9n can never end with digit 0 for any natural no.n
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Answer 1

Answer:

Step-by-step explanation:

For a digit to end with zero it should have factor as 10

10=2*5

But for 9=3*3

So it will not end with 0

Answer 2

9n cannot be end with zero because for a digit to be end with zero it should have prime factors as 2&5 but 9 does not have prime factors as 2&5