Question

Every 6th customer gets a coupon for juice and every 9th gets a coupon for snacks get a coupon for snacks which customer is the first to get both?
sara
18th
Anonymous
the 18th person
Boris
At the grand opening of a new store every 9th customer will receive a balloon and every 12th customer will receive a $10 gift card. Which customer will be the first to get both a balloon and a gift card