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

Correct Answer:

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 = \( \Large 2^{4} - 1 = 15 \).

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 = \( \Large 2^{4} - 1 = 15 \).

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