Question

Find whether A is a proper subset of B in the following problems (Give

Reasons)

(A) A = {x is a prime number and x < 10} , B = {x is a divisor of 460}

(B) A = {x is a letter of the word ‘FOLLOW’}, B = { x is a letter of the word

‘WOLF’ }​

Answer 1

Answer:

A. No B. No

Step-by-step explanation:

A. 7 belongs to A but NOt to B.

B. set A = B , hence Cannot be Proper Subset.

Answer 2

Answer:

A) A is not a proper subset of B

B) A is a proper subset of B

Step-by-step explanation:

A) set A in roster form = { 1, 3, 5, 7 }

set B in roster form = { 1, 2, 4, 5, 10, ... , 460 }

as all elements of A is not in set B. A is not a

subset of B.

B) set A in roster form = { F, O, L, W }

set B in roster form= { W, O, L, F, }

As elements of set A is in Set B. set A is an subset of set B