Problema Solution
if four coins are tossed, what is the probability that four heads will not come up ?
Answer provided by our tutors
let
A is the event: all four heads came up
not A is the opposite event: four head did not come up
p(A) + p(not A) = 1
p(A) = 1/2^4
p(A) = 1/16
1/16 + p(not A) = 1
p(not A) = 1 - 1/16
p(not A) = 15/16
p(not A) = 0.9375
the probability that four heads will not come up is 0.9375.