Test Index

UPSC NDA I and II 2020 Math Solved Paper

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

X

Y,

Z

p,

X ?

Solution: 👈: Video Solution

n(X \cup Y \cup Z)^{1}=P

and

n(Z)=90

(given)

\therefore n(X)^{1}

=P+90-12-18+b

=p+b+60

Go to Question:

Prev Question

Next Question