Question

Express 79 as the sum of three odd prime numbers​

Answer 1

Subtract 19 and you get to 60, so you need 60 represented as the sum of 2 odd primes. Now, what's special about 60 is that it's divisible by 2, 3 and 5. So, if 60=a+b and a isn't divisible by any of those numbers, b won't be divisible by them either, which means all its prime factors will be >= 7. Since b< 60, that would imply b is prime, with the exception of 49.

So, you can literally take any prime between 7 and 30 as a, with the exception of 60–49=11, and b will be guaranteed to be prime as well.

Examples:

79=19+13+47

79=19+19+41

79=19+29+31

Of course, you can also find plenty of ways to represent 79 as such a sum without 19 being one of them.

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Answer 2

Answer: 79 can be expressed as :

71 + 3 + 5 = 79

Step-by-step explanation:

79 can be expressed as,

71 + 3 + 5 = 79

Hope it helps you

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