Instructions

What approximate value will come in place of question mark (?) in the given questions ? (You are not expected to calculate the exact value.)

Question 43

$$\sqrt{?}$$ $$\div$$ 5 = 220 - $$6^{3}$$

Solution

Expression : $$\sqrt{?}$$ $$\div$$ 5 = 220 - $$6^{3}$$

=> $$\frac{\sqrt{x}}{5} = 220 - 216$$

=> $$\sqrt{x} = 4 \times 5 = 20$$

=> $$x = (20)^2 = 400$$

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