Question

A = {x: x is a natural number less than 8}

1. Write in roster form.

2. Write a subset of A containing all even numbers in A.

3. Which of the following could not be the number of elements of power set of a set [2, 8, 10, 16]?

Answer 1

1. A = {1, 2, 3, 4, 5, 6, 7}

2. {2, 4, 6} or {2, 4, 6, 7}

3. 10. (since other are powers of 2.)