Question 40

Select the option that is related to the third number in the same way as the second number is related to the first number.
3 : 25 :: 1 : ?

Solution

The logic here is

$$\left(3+2\right)^2=5^2=25\ $$ $$\longrightarrow\ $$ $$\left(\text{first number}+2\right)^2=\text{second number}$$

Similarly,

$$\left(1+2\right)^2=3^2=9\ $$ $$\longrightarrow\ $$ $$\left(\text{third number}+2\right)^2=\text{fourth number}$$

$$\therefore\ $$9 is related to 1 in the same way 25 is related to 3.

Hence, the correct answer is Option C

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Select the option that is related to the third number in the same way as the second number is related to the first number.3 : 25 :: 1 : ?