What will come in place of the question mark (?) in the following equation, if ‘+’ and ‘−’
 are interchanged and ‘×’ and ‘÷’ are interchanged?
52 ÷ 15 − 189 × 9 + 117 = ?

This question was previously asked in
RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 2)
View all RRB NTPC Papers >
  1. 688
  2. 672
  3. 678
  4. 684

Answer (Detailed Solution Below)

Option 4 : 684
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RRB NTPC Graduate Level Full Test - 01
100 Qs. 100 Marks 90 Mins

Detailed Solution

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<p>BODMAS Table: </p><p></p><p>Given equation: 52 ÷ 15 − 189 × 9 + 117 = ?</p><p>Now, if ‘+’ and ‘−’ and ‘×' and ‘÷’ are interchanged, then:</p><p>⇒ 52 <span>×</span> 15 <span>+</span> 189 <span>÷</span> 9 <span>−</span> 117 = ?</p><p>⇒ <u><strong>52 × 15</strong></u> + <u><strong>189 ÷ 9</strong></u> − 117 = ?</p><p>⇒ <u><strong>780 + 21</strong></u> − 117 = ?</p><p>⇒ <u><strong>801 − 117</strong></u> = 684</p><p><span>Hence, the correct answer is </span><span>"Option 4".</span></p> - guacandrollcantina.com
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