Question

8 If A=[x/x is a prime number and x< 20]
B =[x; 2x+1x€w and x<9]
Then find i)AuB ii)AnB iii)A-B iv)B-A
Express your observation from the result​

Answer 1

Answer:

A ={2,3,5,7,11,13,17,19}

B={3,5,7,9,11,13,15,17}

AUB = {2,3,5,7,9,13,15,17,19}

ANB = {3,5,7,11,13,17 }

A-B = {2,19}

B-A = {9,15}