Math, asked by duttapalkpa4550, 1 year ago

show that the number 7 power n cannot end with the digit zero for any natural number

Answers

Answered by Anonymous
18
Hey dear!

Here is yr answer....

Given,

7^n where, n is any natural no.


If any no. is going to be end with the digit 0...then it is divisible by 2 , 5


Therefore, in its prime factorization 2, 5 should occur

But.... 7 is a prime no.

So, there will be no factors.. 2,5


So, 7^n is not divisible by 2 , 5

Therefore, 7^n never ends with 0


Hope it hlpz.
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