Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.
15 : 270 :: 21 : ? :: 18 : 378
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 504.
The logic followed is:
Logic: First no.2 + (First no. × 3) = Second no.
15 : 270 →
152 + (15 × 3) = 225 + 45 = 270
18 : 378 →
182 + (18 × 3) = 324 + 54 = 378
and 21 : ? →
212 + (21 × 3) = 441 + 63 = 504
Thus, 21 : 504.
Hence, 504 is the correct answer.