P and Q are two positive integers such that PQ = 36 Which of the following cannot be the value of P + Q ?

Question: P and Q are two positive integers such that PQ = 36 Which of the following cannot be the value of P + Q ?

Solution:
Given,
P and Q are two positive integers and PQ = 36
36 = 1 × 36
= 2 × 18
= 3 × 12
= 4 × 9
= 6 × 6
The possible combinations of (P, Q) So that, the product is 36 are (1, 36), (2, 18), (3, 12) and (4, 9)

∴ P + Q cannot be 22.