Question : Directions: Select the option that is related to the fourth term in the same way as the first term is related to the second term and the fifth term is related to the sixth term.
5 : 24 :: ? : 143 :: 4 : 15
Option 1: 7
Option 2: 12
Option 3: 8
Option 4: 11
Correct Answer: 12
Solution :
Given:
5 : 24 :: ? : 143 :: 4 : 15
Subtract 1 from the square of the first number to get the second number –
Like, 5 : 24→5
2
– 1 = 24
And, 4 : 15→4
2
– 1 = 15
Similarly, follow the same pattern for ? : 143→x
2
– 1 = 143, x
2
= 144, x = 12
Therefore, 12 is related to 143. Hence, the second option is correct.
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