Question

Every 6th voter gets a button. Every 7th voter gets a sticker. Which voter is the first to receive both items?

Answer 1

42

Explanation:

Use LCM of 6 and 7 to find a number that is the same:

6 12 18 24 30 36 42

7 14 21 28 35 42

Since 42 shows up in both, the 42th voter gets a button and sticker.

Hope this helped.