What is the smallest number divisible by 1-9?

Answer 1

10

Answer 2

2520.

To evaluate this answer obtain the prime factors of the numbers 2 - 9 (as every integer is divisible by 1). Then take the product of the highest power of each prime factor.

2 = 2 : 3 = 3 : 4 = 2 x 2 = 22 : 5 = 5 :6 = 2 x 3 :7 = 7 :8 = 2 x 2 x 2 = 23 :

9 = 3 x 3 = 32

The bold figures are the numbers that have to be multiplied to produce the Lowest Common Multiple : 5 x 7 x 23 x 32 = 2520.