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Instructions
What should come in place of the question mark (?) in the following questions?
Solution
Expression : $$(7921 \div 178) - 5.5 = \sqrt{?}$$
=> $$\sqrt{?} = (\frac{7921}{178}) - 5.5$$
=> $$\sqrt{?} = 44.5 - 5.5 = 39$$
=> $$? = (39)^2 = 1521$$
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