Question

The product of two 2-digit numbers is 1386. If the product of their unit's digits is 6 and that the ten's digit is 12, find the numbers.

Answer 1

Answer:

22 and 63

21 and 66

Step-by-step explanation:

Because the factor of 6 is

1,6

2,3

the above must be the possible values of the unit's digit

Because the factors of 12 is

2,6

3,4

the above must be the possible values of the ten's digit

We KNOW that multiplying the units digit result in a 6, so the only combination is

2,3 or 1,6

Trying combinations of the above with possible values of the tens digit results in:

22 and 63

21 and 66