Hi student, let me help you out! :)
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We are asked to write 25 as a product of two primes.
A prime number is a number that can only be divided by 1 and itself.
So if we multiply two such numbers, we'll get 25.
These numbers are 5 and 5; 5 is only divisible (evenly) by 1 and itself.
Hope it helps you out! :D
Ask in comments if any queries arise.
#StudyWithBrainly
~Just a smiley person helping fellow students :)