JAMB - Mathematics (2024 - No. 31)

How many proper and improper subsets are there in the set K = { a, b, c, d, e}?
10
25
32
50

Explanation

For a set with n elements, the total number of subsets is given by:

2\(^n\)

where n = the number of members of the set = 5

so, 2\(^5\) = 32

(every set is an improper subset of itself)

 

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