What will come in the place of '?’ in the following equation, if ‘+' and ‘÷' are interchanged and ‘x' and ‘-’ are interchanged?

27 ÷ 14 x 21 + 3 - 4 = ?

This question was previously asked in
RRB Technician Grade III Official Paper (Held On: 29 Dec, 2024 Shift 1)
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  1. 13
  2. 10
  3. 16
  4. 15

Answer (Detailed Solution Below)

Option 1 : 13
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Detailed Solution

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Given Equation: 

27 ÷ 14 x 21 + 3 - 4 = ?

BODMAS Rule:

After interchanging  ‘+' and ‘÷' and ‘x' and ‘-’, we get

27 + 14 - 21 ÷3

⇒ 27 + 14 - x 4 

⇒ 41 - 28 = 13 

Hence, the correct option is "Option 1".

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