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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?

  1. A
    63
  2. B
    93
  3. C
    81
  4. D
    79

Solution & Step-by-step Explanation

Given equation:

Interchanging the signs as instructed: The new mathematical expression becomes:

Applying the BODMAS rule:Division:

Expression becomes: Multiplication:

Expression becomes: Addition and Subtraction:

Hence, the correct answer is 79.

Practice this question

Try it yourself before checking the explanation above.

What will come in the place of the question mark (?) in the following equation, if ' ' and ' ' are interchanged and ' ' and ' ' are interchanged?
A
63
B
93
C
81
D
79

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