Q.

If A={1, 2, 3, 4, 5},  then the number of proper subsets of A is

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answer is 31.

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Detailed Solution

The number of proper subset =2n−1=25−1=32−1=31
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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Best Books for NEET
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