Question

The library has enough DVD’s to display equal numbers of them in groups of 3, 5, or 9. What is the least number of DVDs the library can have?

Answer 1

45 DVDs

Explanation:

45 is the least common multiple of 3, 5, and 9.

45 can be equally divided by 3, 5, and 9:

45 ÷ 3 = 15

45 ÷ 5 = 9

45 ÷ 9 = 5