Question : Directions: Select the option related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.
7 : 84 :: 5 : ? :: 9 : 144
Option 1: 30
Option 2: 40
Option 3: 36
Option 4: 45
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Correct Answer: 40
Solution :
Given:
7 : 84 :: 5 : ? :: 9 : 144
Multiply the product of the first number and its preceding number by 2, to obtain the second number in each number pair –
Like, 7 : 84→(7 × 6) × 2 = 84
And, 9 : 144→(9 × 8) × 2 = 144
Similarly, follow the same pattern for 5 : ?→(5 × 4) × 2 = 40
So, 40 is related to 5. Hence, the second option is correct.
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