Question

If $A=\{1,2,3,\dots \dots 10\}$ then number of subsets of $A$ containing only odd numbers is

• A. 31
• B. 32
• C. 27
• D. 30

Answer 1

Answer: (B)

Odd number $=\{1,3,5,7,9\}$
No. of sub sets $=2^5=32$