Question

Select the related number from the given alternatives. 289 : 1 ∷ 371 : ?

• A. 1
• B. 9
• C. 5
• D. 7

Answer 1

Answer:

B. 9

289 → (2 + 8) – 9 = 1 Similarly 371 → (3 + 7) – 1 = 9