If '−' means '÷', '÷' means '×', '×' means '+' and '+' means '−', then what will come in place of the question mark (?) in the following equation? 9 ÷ 12 × 450 + 8208 − 18 = ?

This question was previously asked in
RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 3)
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  1. 101
  2. 102
  3. 100
  4. 425

Answer (Detailed Solution Below)

Option 2 : 102
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RRB NTPC Graduate Level Full Test - 01
100 Qs. 100 Marks 90 Mins

Detailed Solution

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Decoding signs:

Sign ÷ × +
Stands For ÷ × +

Given: 9 ÷ 12 × 450 + 8208 − 18 = ?

9 ÷ 12 × 450 + 8208 − 18 = ? ⇒ 9 × 12 + 450 8208 ÷ 18 = ?

⇒ × 12 + 450  8208 ÷ 18 = ?

⇒ × 12 + 450  456 = ?

108 + 450  456 = ?

558  456 = ?

⇒ 102 = ?

Hence, "Option 2" is the correct answer.

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