Question
5121.3 × 641.8 ÷
80.5Â = 8? What should come in place of the question mark (?) in the following questions?Solution
5121.3 ×  641.8 ÷ 80.5 = 8? ((83))1.3 × ((8)2)1.8 ÷ 80.5 = 8? 83.9 ×  83.6 ÷ 80.5 = 8? 83.9 + 3.6 - 0.5 = 8? 87 = 8? ? = 7
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