Question

Find the cardinal number of:

C={x : x=9n, n ∈ W and n ≤ 10}​ please answer

Answer 1

Answer:

n(C) = 1

Step-by-step explanation:

x=9n

W = whole number

the set which satisfies the set builder format is

C = {0,9,18,27,36,45.54.63,72,81,90}

n(C) = 11