Question

Suppose A = {2, 5, 7, 9, 13, 25, 26}.

(a) Find n(A).
n(A) = _________

(b) T/F: 20 A
True
False

Answer 1

a) n(A)7

b) 140

Explanation:

a) numbers in the set

b)since n(A)=7

20A=20×7

=140