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1 mark

What will come in the place of the question mark (?) in the following equation, if '+' and '÷' are interchanged and '×' and '-' are interchanged?
5−63+9÷10×6=?

  1. A
    39
  2. B
    33
  3. C
    36
  4. D
    30

Solution & Step-by-step Explanation

Given original equation:
5−63+9÷10×6=?
Apply the specified sign interchanges:

Interchange + and ÷

Interchange × and −

The modified mathematical expression becomes:

5×63÷9+10−6
Now evaluate the equation using the BODMAS convention:

Division:

63÷9=7
Expression reduces to:

5×7+10−6
Multiplication:

5×7=35
Expression reduces to:

35+10−6
Addition and Subtraction:

35+10=45
45−6=39
Therefore, the final output value is 39.

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?
5−63+9÷10×6=?
A
39
B
33
C
36
D
30

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