If A = \( \Large \{ x : x = 4n+1, 2 \le n \le 5 \} \) then number of subsets of A is:

A) 16

B) 15

C) 4

D) none of these

Correct Answer:
B) 15

Description for Correct answer:
Given that \( \Large A = \{ x:x=4n+1;\ 2 \le n \le 5 \} \)

Number of elements in set A is 4 ,

So, number of proper subsets = \( \Large 2^{4} - 1 = 15 \).

Part of solved Set theory questions and answers : >> Elementary Mathematics >> Set theory


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