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Select the related number from the given alternatives :

12 : 30 :: 20 : ?

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Bihar CET B.Ed Official Paper (Held On: 25 Jun, 2024)
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  1. 48
  2. 32
  3. 35
  4. 42

Answer (Detailed Solution Below)

Option 4 : 42
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Detailed Solution

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The logic followed here is:

For 12 : 30,

12 = 3 × 4 

30 = 5 × 6

Similarly for 20 : ?

20 = 4 × 5 

Then,

6 × 7 = 42.

Hence, the related number is 42.

Hence, the correct answer is "Option 4."

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