Instructions

What will come in place of the question mark (?) in the given questions?

Question 153

$$13^{2}-\sqrt{(1764)}\times\frac{\sqrt{(625)}}{21}=?$$

Solution
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Expression : $$13^{2}-\sqrt{(1764)}\times\frac{\sqrt{(625)}}{21}=?$$

= $$169 - (42 \times \frac{25}{21})$$

= $$169 - (2 \times 25)$$

= $$169 - 50 = 119$$

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