Every 6th customer at a shop receives a free rose, and every 9th customer receives a free lily.
Which customer will be the first to receive a rose and a free lily?
1. 9th customer
2. 18th customer
3. 36th customer
4. 54th customer
The first customer to receive a free rose and a free lily will be the 18th customer.
The 18th customer will receive a rose on their 6th visit and a lily on their 9th visit, making them the first customer to receive both flowers.