Question

If A=(0,5, 10) write all the subsets
and write down the number of proper subsets?​

Answer 1

A=(0,5,10)

To find no.of subsets the formula is ---- 2 to the power n

• the no.of elements in the set A is 3 . so,the 'n' value is 3
• 2 to the power 3 =8

so,the possible subsets are 8.they are:

(0,5,10) , (0), (0,5) , (5,10) , (10,0) , (5) , (10), (null set)

the no.of proper subsets ---2 to the power 3 minus 1 is 7.

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