Instructions

What should come in place of the question mark (?) in the following questions?

Question 103

$$\sqrt{?}-11=\sqrt{1521}$$

Solution
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$$\sqrt{1521}$$ = 39
Let unknown be x.
$$\sqrt{x}$$ = 39+11 = 50
x = 50^2 = 2500
Hence, the correct answer is option A.
 

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