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Question

If A is the set of even natural numbers less than 8 and B is the set of prime numbers less than 7, then the number of relations from A to B is


A

29

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B

92

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C

32

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D

29-1

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Solution

The correct option is A

29


Explanation for the correct option:

Find the number of relations from A to B:

Given,

A is the set of even natural numbers less than 8,

A=2,4,6

B is the set of prime numbers less than 7,

B=2,3,5

As we know,

Number of relations =2mn

Here, m=3,n=3

The number of relations from A to B =29

Hence, Option ‘A’ is Correct.


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