# Quantitative Question: **Download Questions PDF**

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## If s(a) denotes square root of a, find the value of s(12+s(12+s(12+ ...... upto infinity?

## Answer:

4 Explanation :

Let x = s(12+s(12+s(12+..... )

We can write x = s(12+x). i.e., x^2 = 12 + x. Solving this quadratic equation, we get x = -3 or x=4. Sum cannot be -ve and hence sum = 4.

Let x = s(12+s(12+s(12+..... )

We can write x = s(12+x). i.e., x^2 = 12 + x. Solving this quadratic equation, we get x = -3 or x=4. Sum cannot be -ve and hence sum = 4.

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