Let A = [2, 3, 5, 7]. Examine whether the statements given below are true or false.
(i)∀ x ∈ A, x is prime.

A = [2, 3, 5, 7] (given in the question).
The given statement is: ∀ x ∈ A, x is prime.
So, we need to see whether for all ‘x’ which belongs to ‘A’, such that x is a prime
number.
All ‘x’ which belongs to A = [2, 3, 5, 7] is a prime number.
∴∀ x ∈ A, x is prime.
So, the given statement is TRUE.