if there is 27 marbles in a bag and the amount of red marbles is 5 less than 3 times the amount of blue marbles how many marbles
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Answer:
Step-by-step explanation:
Taking the terms one at a time,
Adding the terms, you have;
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You only need to consider the situations where 10 or 11 of the babies are girls, then subtract those probabilities from 1. This will give probability that any other number up to 9 of the babies are girls.
Use binomial theorem.
n = 11
k = 10,11
p = 1/2
Use binomial theorem.
n = 11
k = 10,11
p = 1/2