IBPS Clerk Prelims Model Paper 19

Let the numbers be x and (10 — x)
Then, x (10 — x) = 5 × 495
⇒ x2 — 10x — 2475 = 0
⇒ (x — 55) (x + 45) = 0
⇒ x = — 55 or x = 45
∴ The numbers are 45 and 55
Required difference = (55 — 45) = 10