Question : Directions: 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.
12 : 120 :: 20 : 360 :: 3 : ?
Option 1: 15
Option 2: 32
Option 3: 7
Option 4: 3
Correct Answer: 3
Solution :
Given:
12 : 120 :: 20 : 360 :: 3 : ?
Like, 12 : 120→(12)
2
– (12 × 2) = 144 – 24 = 120
And, 20 : 360→(20)
2
– (20 × 2) = 400 – 40 = 360
Similarly, for (3 : ?)→(3)
2
– (3 × 2) = 9 – 6 = 3
So, 3 is related to 3 in the same way as the second number is related to the first number, and the fourth number is related to the third number. Hence, the fourth option is correct.
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