Question

When 8 fair coins are tossed simultaneously, in how many of the outcomes will at most three of the coins turn up as heads?

• A. 89
• B. 91
• C. 79
• D. 93
• E. 84

Answer 1

The correct option is D

93

The number of ways = ${}^8{C}_0$+ ${}^8{C}_1$+ ${}^8{C}_2$+ ${}^8{C}_3$ = 93.