JEE MATHEMATICS MCQ: RELATIONS

1 Easy

1 of 1

Application +4 | -1

Let

A

and

B

be two non-empty sets having

n

elements in common. Then, the number of elements common to

A \times B

and

B \times A

View answer and explanation

Correct option: C

n^2

Option C (

n^2

) is correct because the number of elements common to

A \times B

and

B \times A

is the square of the number of elements common to

A

and

B

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\mathrm{Z}

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a d(b+c)=b c(a+d)

\mathrm{R}

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R

R=\{(x, y) \in W \times W \mid

x

y

\}

S

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S

X

R

X

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B

R

R

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R