Answer:
Step-by-step explanation:
First the prime factors- 2-36
2-18
3-9
3-3
0-1
So the prime factors of 36 is 2x2x3x3=36
then the prime factors of 40
2-40
2-20
2-10
5-5
0-1
so the prime factors of 40 is 2x2x2x5=40
so the least common factor in both the prime factor is 2 so there there is no other common multiple so the answer is 2