Question

in a class of 50 boys 35 like horror movies thirty like war movies and 5 like neither find the number of those that like both​

Answer 1

Step-by-step explanation:

45=35+30−n(A∩B)or

n(A∩B)=20

45=35+30−n(A∩B)

or

n(A∩B)=20

Answer 2

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In a class No. of boys = 50

No. of boys like horror movies or war movies = 35

No. of boys like neither = 5

No. of boys like both = 35 + 5 = x = 50 - x = y Ans. = y

y = 35 + 5 = x = 50 - x

y = x = 35 + 5 = 40

So, y = 50 - x , 50 - 40 = 10

y = 10

Ans. = 10 boys like both horror and war movies in the class.

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