Sum of N Numbers

I do not understand the concept

you have written the topic SUM OF N NUMBERS
and the content is given to find whether the given no. is prime or not

in the video they has just explained to know whether the given no is prime or not

a no. is prime only if it is divisible by 1 and itself
so we are making a loop 2 to n-1 and anyone can divide the n then the given no is not a prime no.

hope this will help u
pls rate my work so that i can improve my work

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