Q. 175.0( 1 Vote )

Find the number o

Number of subsets can be same as number of elements in its power set which is nothing but 2n elements. But for proper subset, there should be no element in the power set which is equal to our set itself, therefore 2n -1 elements.

i. number of subsets=26 =64,

number of proper subsets=26 -1= 63

ii. number of subsets=27 =128,

number of proper subsets=27 -1= 127

iii. number of subsets=21 =2,

number of proper subsets=21 -1= 1

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