Determine the probability that a learner selected at random from this school does Mathematics.
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Let us define some events
A : a student is girl.
B : a student is boy.
E : a student does Mathematics.
It is given that
P(A) = 0.60, P(B) = 1 - 0.60 = 0.40
P(E|A) = 1 - 0.55 = 0.45
P(E|B) = 1 - 0.65 = 0.35
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