Question

Express $71$ as a sum of $3$-odd primes.

Answer 1

Prime numbers are natural numbers that are divisible by only $1$ and the number itself.

Prime numbers upto $71$ are $2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,57,59,61,67$

$71$ as a sum of $3$-odd primes can be written as $19+23+29$.

Hence, $19,23\mathrm{and}29$ are three odd prime numbers whose sum is $71$.