Question

Let $A=\{1,3,5,7,....\}$ and $B=\{1,2,3,4,5\}$

Then $A$ and $B$ are

• A. Finite and infinite set respectively
• B. Infinite and finite set respectively
• C. Both Infinite sets
• D. Both finite sets

Answer 1

Answer: (B)

Infinite and finite set respectively

$A=\{1,3,5,7,....\}$ and $B=\{1,2,3,4,5\}$

Clearly, A has infinite number of elements and B has 5 elements

Hence, $A$ and $B$ are infinite and finite sets respectively.