What will come in the place of the question mark (?) in the following equation, if '+' and '×' are interchanged and '-' and '÷' are interchanged?
Correct Answer :
60
Solution :
The correct answer is 60.
We are given the mathematical equation:
According to the instructions, we need to interchange the mathematical operators as follows:
• '+' and '×' are interchanged
• '-' and '÷' are interchanged
Replacing the original operators in the given equation with their interchanged counterparts, we get:
Now, solve the expression following the standard order of operations (BODMAS / PEMDAS rule):
Step 1: Perform Division
Substituting this back into the equation:
Step 2: Perform Multiplication
Substituting this back into the equation:
Step 3: Perform Addition and Subtraction
Therefore, the value that replaces the question mark (?) is 60.
Access expert-curated educational resources and study materials—completely free.
Create, conduct, and manage professional online assessments with Mindyard. Perfect for teachers and institutes.
Copyright © 2026 Mindyard. All Rights Reserved.