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Question

Which of the following is not a null set?


A

A = {x: -10<x<2, x is a natural number}

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B

B = {x:x is an even prime number greater than 2}

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C

C = {x: x - 3=0, x is decimal number}

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D

D = {x: x is an odd natural number divisible by 2}

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Solution

The correct option is A

A = {x: -10<x<2, x is a natural number}


A = {1}, 1 is the only natural number between -10 and 2

B = { }; 2 is the only even prime. There are no numbers greater than 2 that are even prime.

C = { }; x - 3 =0 x= 3 which is not decimal number.

D = { }; odd numbers are not divisible by 2.


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