Question

2. Write each of the following in set builder form.
(a) A = {5, 10, 15, 20}

(b) B = {l, 2, 3, 6, 9, 18}

(c) C = {P, R, I, N, C, A, L}

Answer 1

Step-by-step explanation:

Since, the given set can be written as {x : x is a natural number upto 20 and divisible by 5}

Hence, F={x∣x=5n,n∈N,n≤4}