If ‘S’ stands for ‘−’, ‘Q’ stands for ‘×’, ‘R’ stands for ‘÷’, and ‘P’ stands for ‘+’, what will come in place of the question mark (?) in the following equation?
1 P 4 5 R 2 Q 2 S 4 = ?

This question was previously asked in
RRB NTPC Graduate Level CBT-I Official Paper (Held On: 05 Jun, 2025 Shift 2)
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  1. 36
  2. 40
  3. 46
  4. 42

Answer (Detailed Solution Below)

Option 4 : 42
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Detailed Solution

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Given symbol mappings:

  • ‘S’ stands for ‘−’
  • ‘Q’ stands for ‘×’
  • ‘R’ stands for ‘÷’
  • ‘P’ stands for ‘+’

The given equation is:

1 P 45 R 2 Q 2 S 4 = ?

⇒ 1 + 45 ÷  2 × 2 - 4 = ?

⇒ 1 + 45 - 4 = ?

⇒ 46 - 4 = 42.

Hence, the correct answer is "Option 4".

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