Question
(?)2 + 8.113 = 28.92
– 73.03 What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)Solution
(?)2 + 83 = 292 – 73 (?)2 + 512 = 841 – 73 (?)2 = 768 – 512 (?)2 = 256 ? = 16
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