What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?
Correct Answer :
125
Solution :
The correct option is 125.
Given Equation:
Interchange Rules:
• '+' and '−' are interchanged.
• '×' and '÷' are interchanged.
Step 1: Replace the signs according to the given instructions:
• '×' becomes '÷'
• '+' becomes '−'
• '−' becomes '+'
• '÷' becomes '×'
Substituting these changes into the original equation, we get the new equation:
Step 2: Solve the new equation using the BODMAS rule (Brackets, Orders, Division/Multiplication, Addition/Subtraction):
First, perform Division and Multiplication:
Substitute these values back into the equation:
Next, perform Addition and Subtraction from left to right:
Therefore, the number that comes in place of the question mark (?) is 125.
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