a, Probability of getting 3 tails in 3 coin flips is (18)
b, the probability of getting no tail is (41)
c, outcomes have at least 2 heads? ) = 15. So the total is 15 + 20 + 22 = (57.)
d, 4 times we get 2^4=(16) possible outcome.
e, Since there are 16 possible outcomes, and 10 do not have N=2 heads, there must therefore be exactly 16 - 10 = 6 outcomes which do have exactly N=2 heads.
Answers & Comments
a, Probability of getting 3 tails in 3 coin flips is (18)
b, the probability of getting no tail is (41)
c, outcomes have at least 2 heads? ) = 15. So the total is 15 + 20 + 22 = (57.)
d, 4 times we get 2^4=(16) possible outcome.
e, Since there are 16 possible outcomes, and 10 do not have N=2 heads, there must therefore be exactly 16 - 10 = 6 outcomes which do have exactly N=2 heads.
correct if wronq!!