Question

If A = {x | x ∈ N, x is a prime number less than 12} and B = {x | x ∈ N, x is a factor of 10}, then A ∩ B = ______.

विकल्प

• {2}

• {2, 5}

• {2, 5, 10}

• {1, 2, 5, 10}

Answer 1

If A = {x | x ∈ N, x is a prime number less than 12} and B = {x | x ∈ N, x is a factor of 10}, then A ∩ B = {2, 5}.

Explanation:

We have,

A = {x | x ∈ N, x is a prime number less than 12}

= {2, 3, 5, 7, 11} and 

B = {x | x ∈ N, x is a factor of 10} = {1, 2, 5, 10}

∴ A ∩ B = {2, 5}