Question

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➡️List all the elements of the following sets:

i) A = {x:x is an odd natural no.}

ii) B = {x:x is an integer , -1/2<x<9/2}

iii) C = {x:x is an integer , x²< 4}


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Answer 1

Answer:

i) A = (1,3,5,7,9,11,13,15,,,,,,, upto infinite )

Explanation for A: Natural numbers which are not divisible by 2 are the odd natural numbers and they are infinite so it is not possible to write all numbers.

ii) B = (0,1,2,3,4)

Explanation: -0.5<x<4.5

so we will write integers which lies in this interval.

iii) C = (-1,0,1)

Explanation : x²<4 => x€(-2,2)

so we will write integers which lies in this interval.

Answer 2

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