Question 9
In the following question, select the related number from the given alternatives.
9 : 81 :: 11 : ?
Solution
The logic here is
9$$^2$$ = 81 $$\longrightarrow\ $$ $$\text{first number}^2=\text{second number}$$
Similarly, $$\text{third number}^2=\text{fourth number}$$
$$\therefore\ $$Fourth number = 11$$^2$$ = 121
Hence, the correct answer is Option C
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