Question

If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A - B?

a) {2, 7}
b) {1, 9}
c) {1, 2, 7, 9}
d) [3, 5, 7}

Answer 1

Answer :- (b) { 1 , 9 }

$\bf\huge\underline{\underline{ Given :- }}$

• A = { 1 ,3 ,5 , 7 , 9 }

• B = { 2 , 3 , 5 , 7 }

$\rule{10cm}{0.05cm}$

$\bf\huge\underline{\underline{ To \: Find:- }}$

A - B

$\bf\huge\underline{\underline{ Answer :- }}$

A - B = { 1 , 3 ,5 , 7 ,9 } - { 2 ,3 , 5, 7 }

= { 1 , 9 }