Question : Directions: In the following question, select the related number from the given alternatives.
4 : 12 :: 5 : ?
Option 1: 25
Option 2: 20
Option 3: 22
Option 4: 30
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Correct Answer: 20
Solution :
Given:
4 : 12 :: 5 : ?
Multiply the first number by its predecessor to obtain the second number in each pair.
Like, 4 : 12→4 × (4 – 1) = 4 × 3 = 12
Similarly, follow the same pattern for 5 : ?→5 × (5 – 1) = 5 × 4 = 20
So, 5 is related to 20 . Hence, the second option is correct.
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