Solve the problem.
-If you toss four fair coins, in how many ways can you obtain at least one head?
A) 16
B) 15
C) 5
D) 4

Question

Quizplus · Accepted Answer

The total number of outcomes when tossing four fair coins is 2^4 = 16 (since each coin has 2 outcomes and there are 4 coins). The only way to not get at least one head is if all coins land tails, which is 1 way. Therefore, the number of ways to get at least one head is 16 - 1 = 15.

Solve the Problem. -If You Toss Four Fair Coins, in How Many Ways