Instructions

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

Question 127

$$\sqrt{65 \times 12 - 50 +54}=?$$

Solution
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Expression : $$\sqrt{65 \times 12 - 50 +54}=?$$

= $$\sqrt{780 - 50 + 54}$$

= $$\sqrt{784} = 28$$

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