Question

In a survey of 60 students, 60 Study botany, 50 Zoology and 48 biology. If 38 students study botany, Zoology & biology,

How many study only zoology b How many study non of the three courses a. How many study the zoology and botany​

Answer 1

Explanation:

don't like= n(u)-n(Buz)

n(BuZ) = n(B)+n(z)-n(Bnz)

no(z)=n(z)-intersection

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