If × is replaced with +, ÷ is replaced with x, - is replaced with ÷, + is replaced with -, then 40 ÷ 20 - 5 × 10 + 5 = ?

This question was previously asked in
TSPSC VRO 2018 Official Paper
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  1. 170
  2. 165
  3. 150
  4. 175

Answer (Detailed Solution Below)

Option 2 : 165
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TSPSC VRO: General Knowledge (Mock Test)
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Detailed Solution

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BODMAS Table: 

Given equation: 40 ÷ 20 - 5 × 10 + 5 = ?

Now, if ‘×’ is replaced with ‘+’, ‘÷’ is replaced with ‘×’, ‘-’ is replaced with ‘÷’, ‘+’ is replaced with ‘-’, then:

⇒ 40 × 20 ÷ 5 + 10 - 5 = ?

⇒ 40 × 20 ÷ 5 + 10 - 5 = ?

⇒ 800 ÷ 5 + 10 - 5 = ?

⇒ 160 + 10 - 5 = ?

⇒ 170 - 5 = 165.

Hence, the correct answer is 165.

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