Question

Write the cardinal number of each of the following sets: (i) A = {x : x is a perfect square number, x ∈N and x ≤ 30}.​

Answer 1

Step-by-step explanation:

1,4,9,16,25 is the answer

Answer 2

Answer:

Step-by-step explanation:

Given that,

A= {x:x is a perfect square number, x∈N and x ≤ 30}

A= { 1, 4, 9, 16,25 }

∴ The cardinal number of the set A = { 5 }