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

Created: 7 years ago | Updated: 4 weeks ago
Updated: 4 weeks ago
Agrani bank Ltd Agrani bank Ltd - Officer (Cash) - 15.12.2017 গণিত সেট (Set)
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প্রশ্ন: If A = {1,2,3,4,5}, then the number of proper subsets of A is-

Proper subsets must contain atleast one less element than the elements of the main set. If the number of elements of set A is n, the number of proper subsets of that set is 2n - 1 = 25 - 1 = 31.

7 years ago
Md Azizur Rahman
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