Question
What will come in place of the question mark (?) of the
following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged? 15 + 9 ÷ 2 – 63 × 3 = ?Solution
15 + 9 ÷ 2 – 63 × 3 15 - 9 × 2 + 63 ÷ 3 15 - 9 × 2 + 21 15 - 18 + 21 36 - 18 = 18
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