UPSC NDA I and II 2020 Math Solved Paper

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DIRECTIONS (Qs. 31-33) : Read the following information and answer the three items that follow:
Consider the following Venn diagram, where X,Y and Z are three sets. Let the number of elements in Z be denoted by n(Z) which is equal to 90.

[NDA-I 2020]

Question : 33 of 120

Marks: +1, -0

If the number of elements belonging to neither X nor Y, nor Z is equal to p, then what is the number of elements in the complement of X?

[NDA-I 2020]

p+b+60
p+b+40
p+a+60
p+a+40

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