What is the probability of tossing a coin five times and having heads appear at least two times? Options:
A) 1/32 B) 1/16 C) 15/16 D) 13/16 E) 7/8
If 'n' coins are tossed there will   nc0 outcomes in which n coins will show head   nc1 outcomes in which 1 head will appear   and so on   Here 5 coins are tossed so the total outcomes = 2 ^5 = 32   Outcomes in which at least 2 heads will appear = 32 - 5c0 - 5c1 = 26   Prob at least two heads will appear = 26/32 = 13/16   ANSWER:13/16
<result>D</result>
What is the probability of tossing a coin five times and having heads appear at least two times?