what two numbers do you multiply to get the answer 28

Question

- x - =28 blank times blank equals twentyeight

Answer 1

too many to list them all:

1x28, 2x14, 3x8, 4x7, and many fractions like 0.5 x 56, 0.1 x 280, 0.2 x 140, 0.4 x 70, ....

Answer 2

28 has the prime factors 2 x 2 x 7, and also non-prime factors of 1 x 28. So working through all the permutations should give you:

1 x 28

2 x 14

4 x 7

and then reversing these for completeness' sake:

28 x 1

14 x 2

7 x 4

You can get the prime factors of a number here: http://statsfiddle.info/Primes/PrimeFactors/28