Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.
16: 120:: 18:? :: 22: 231
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 153.
The logic used here is:
(1st number × (1st number ÷ 2)) - (1st number ÷ 2)
16: 120
= (16 × (16 ÷ 2)) - (16 ÷ 2)
= (16 × 8) - 8 = 128 - 8 = 120
22: 231
= (22 × (22 ÷ 2)) - (22÷ 2)
= (22 × 11) - 20 = 242 - 11 = 231
Similarly,
18:?
= (18 × (18 ÷ 2)) - (18 ÷ 2)
= (18 × 9) - 9 = 162 - 9 = 153
Hence, option 2 is the correct answer.