Question

U = {x€N | 16 A = {multiples of 7}

B = {factors of 56}
C = {even numbers > 22}
i) List the members of each of these sets A, B and C contained in U.

Answer 1

Explanation:

The number of distinct elements in a finite set is called its cardinal number. It is denoted as n(A) and read as 'the number of elements of the set'. For example: (i) Set A = {2, 4, 5, 9, 15} has 5 elements.