Question

Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number. 21 : 529 ∷ 25 : 729 ∷ 17 : ?

• A. 324
• B. 361
• C. 289
• D. 441

Answer 1

Answer:

B. 361

For 21 : 529 21 + 2 = 23 23^2 = 529 For 25 : 729 25 + 2 = 27 27^2 = 729 For 17 : ? 17 + 2 = 19 19^2 = 361