Question

The lifeguards at the beach post information of surfers by placing 3 flags, one above the other, on a flag pole. If there are 7 different flags available, how many possible signals can be flown?​

Answer 1

Answer: 210

Explanation:

1st Flag and 2nd Flag and 3rd Flag

7 choices x 6 choices x 5 choices = 210

Using the formula:
`(7!)/((7-3)!)=(7* 6* 5* 4!)/(4!)=7* 6* 5=\large\boxed{210}`