If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’, and ‘D’ stands for ‘−’, what will come in place of the question mark (?) in the following equation?
45 B 14 A 21 D 17 C 25 = ?

This question was previously asked in
RRB NTPC Graduate Level CBT-I Official Paper (Held On: 05 Jun, 2025 Shift 3)
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  1.  42
  2. 54
  3. 38
  4. 36

Answer (Detailed Solution Below)

Option 3 : 38
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Detailed Solution

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Given the symbol meanings:

  • ‘A’ stands for ‘÷’
  • ‘B’ stands for ‘×’
  • ‘C’ stands for ‘+’
  • ‘D’ stands for ‘−’

The given equation is:

45 B 14 A 21 D 17 C 25 = ?

Substitute the symbols with their corresponding mathematical operations:

45 × 14 ÷ 21 - 17 + 25 = ?

Now, follow the order of operations (BODMAS/PEMDAS):

45 × (14 ÷ 21) - 17 + 25

45 × (2/3) - 17 + 25

30 - 17 + 25

13 + 25 = 38

Hence, the correct answer is "Option 3".

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