If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’, and ‘D’ stands for ‘–’, what will come in place of the question mark (?) in the following equation? 17 C 35 A 6 B 18 D 4 = ?
118
Replace each letter with its sign: A → ÷, B → ×, C → +, D → –. The expression becomes 17 + 35 ÷ 6 × 18 – 4.
Follow BODMAS: division and multiplication come before addition and subtraction, worked from left to right. So 35 ÷ 6 × 18 = \(\frac{35}{6}\) × 18 = 35 × 3 = 105.
Then 17 + 105 – 4 = 122 – 4 = 118.
Check: \(\frac{35 \times 18}{6} = \frac{630}{6} = 105\), which is a whole number, and 17 + 105 = 122, 122 – 4 = 118, confirming the value.
Hence, 118.
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Important Questions from Mathematical Operations
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(6, 13, 78)
(5, 22, 110)
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Which two numbers should be interchanged to make the given equation correct?
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