What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−‘ are interchanged and ‘×’ and ‘÷’ are interchanged?
38 ÷ 21 + 436 × 4 − 73 = ?
Given Expression:
38 ÷ 21 + 436 × 4 − 73
With operator interchanges:
‘+’ becomes ‘−’
‘−’ becomes ‘+’
‘×’ becomes ‘÷’
‘÷’ becomes ‘×’
Apply substitution:
So the new expression becomes:
38 × 21 − 436 ÷ 4 + 73
Apply BODMAS (solve in correct order)
Expression:
38 × 21 − 436 ÷ 4 + 73
Step-by-step:
38 × 21 = 798
436 ÷ 4 = 109
Now apply the operations:
798 − 109 = 689
689 + 73 = 762
762 is answer.
English
100 Questions
100 Marks
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What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘÷’ are interchanged and ‘−’ and ‘×’ are interchanged?
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