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Multiple Choice Question

If the 7-digit number 5432x72 is completely divisible by 9, what is the value of the single digit 'x'?यदि 7 अंकों की संख्या 5432x72 पूर्णतः 9 से विभाज्य है, तो एकल अंक 'x' का मान क्या होगा?

  • A
    2
    2
  • B
    4
    4
  • C
    5
    5
  • D
    7
    7
Explanation:
Divisibility rule for 9: Sum of digits must be divisible by 9. Sum = 5 + 4 + 3 + 2 + x + 7 + 2 = 23 + x. The next multiple of 9 is 27. Thus x = 27 - 23 = 4.
9 की विभाज्यता का नियम: अंकों का योग 9 से कटना चाहिए। अंकों का योग = 5 + 4 + 3 + 2 + x + 7 + 2 = 23 + x। 23 के बाद 9 का गुणज 27 है। अतः x = 27 - 23 = 4।
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This question belongs to the set "RRB NTPC Graduate FREE Mock Test 2026 (CBT-1)". Click below to read detailed notes and attempt the full quiz.

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