Write the following sets in roster form

1) B = {x : x is a positive factor of a prime number}

2) C={x : x2=x where x belongs to Real numbers}

Fast.pls its very urgent..

Posted by Anshika Solanki (Apr 20, 2017 9:11 p.m.) (Question ID: 4975)

• 1) B={2,3,5,7,11,...} since prime or positive factors of prime numbers are itself.

2)C={0,1} since C={x: x2=x where x belongs to R}

={x: x2-x=0 where x belongs to R}

={x: x(x-1)=0 where x belongs to R}

={x: x=0 and x-1=0 where x belongs to R}

={x: x=0 and x=1where x belongs to R}

={0,1}

Answered by Dharmendra Kumar (Jul 18, 2017 7:57 p.m.)
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