Question

please send to me fast ​

Answer 1

Answer:

16. No of subsets of a set having n elements =2m.

But the empty set ϕ and the set itself are not the proper subsets.

∴ the number of proper subsets of a set having n elements =2m−2.

17. A rational number is a fraction indicating the quotient of two integers, excluding division by zero.

18. π ( Pi ) is a non terminating and non recurring decimal.

19. The symbol n√ is called a Radical.