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dezoksy [38]
4 years ago
11

A few days after his birthday, a RETIRED mathematics teacher was musing. He realised that his age was a prime number. He then no

ticed that a year ago, his age was the product of 3 distinct prime numbers and, a year hence his age would be the product of a square number, and a cube number.
How old is he?
Mathematics
1 answer:
yKpoI14uk [10]4 years ago
5 0
He is 71 which is a prime number.
A year ago he was 70 which is 2x5x7 all prime and distinct (different). In a years time he will be 72 which is 8 cubed x 3 squared.
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