Eight different ways.Eight different ways.Eight different ways.Eight different ways.
It would be 5 ways
It is: 3*29 = 87
19
Three ways (I think).
There are many ways to do prime factorisation for 20. It is not prime as it has more than 2 factors. The beginning of the prime factorisation is correct, but it is incomplete. These are two ways to complete it. 20 4x5 2x2x5 or 20 2x10 2x2x5 You have to continue using factorisation on all the numbers until all the numbers are prime. The prime numbers will always be the same if it starts with the same original number.
Ignoring the order of the primes, there is only one way.
5 x 5 23 + 2 29 - 2 - 2
Two, if the order of the primes is ignored.
24 = 11 + 13 = 5 + 19
6+6
Three ways. 3 + 37 11 + 29 17 + 23