JEE MATHEMATICS MCQ: RELATIONS

1 Easy

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Application +4 | -1

A

is the set of even natural numbers less than 10 and

B

is the set of prime numbers less than 5 , then the number of relations from

A

B

View answer and explanation

Correct option: A

2^8

Option A (

2^8

) is correct because the number of relations from set A to set B is

2^{n(A) \times n(B)}

, where n(A) and n(B) are the number of elements in sets A and B, respectively.

More Questions from RELATIONS

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\mathrm{Z}

R

\mathrm{N}

\mathrm{R}

\mathrm{N} \times \mathrm{N}

(\mathrm{a}, \mathrm{b}) \mathrm{R}(\mathrm{c}, \mathrm{d})

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

\mathrm{R}

W

R

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

x

y

\}

S

R = \{ \left( {a,\;b} \right):1 + ab > 0\}

S

X

R

X

A

B

R

R

N

R = \left\{ {\left( {x,\;y} \right):4x + 3y = 20} \right\}

R