Question

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

5121.3 × 641.8 ÷ 80.5 = 8?

A 3 Correct Answer Incorrect Answer
B 5 Correct Answer Incorrect Answer
C 4 Correct Answer Incorrect Answer
D 7 Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

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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