Question

The LCM of smallest 2-digit number and smallest composite number is ______.

Options

• 12

• 4

• 20

• 40

Answer 1

The LCM of smallest 2-digit number and smallest composite number is 20.

Explanation:

Smallest two-digit number = 10

Smallest composite number = 4

Then 10 = 2 × 5 × 1

4 = 2 × 2 × 1

LCM = 2 × 2 × 5 × 1 = 20

Therefore, the LCM of smallest 2-digit number and smallest composite number is 20.