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Question : Directions: Select the option related to the third number in the same way as the second number is related to the first number.
169 : 12 :: 81 : ?
Option 1: 9
Option 2: 7
Option 3: 6
Option 4: 8
Answer (1)
Correct Answer: 8
Solution :
Given:
169 : 12 :: 81 : ?
Square the first term, and then subtract 1 from the resultant, to get the second term –
Like, 169 : 12→√(169) = 13; 13 – 1 = 12
Similarly, follow the same pattern for 81 : ?→
√(81) = 9; 9 – 1 = 8
So, 8 is the required answer. Hence, the fourth option is correct.
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