IBPS Clerk Prelims practice question
On a customs entry number, the digits sum to 19. The hundred's digit is twice the unit's digit, and the tens digit exceeds the unit's digit by 3. Find the customs entry number.
From a IBPS Clerk Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (B) 874
Let unit digit = u. Then hundred digit h = 2u, tens digit t = u + 3. Sum: 2u + (u+3) + u = 4u + 3 = 19, so u = 4. Then h = 8, t = 7. Number = 100×8 + 10×7 + 4 = 874.
हिंदी में प्रश्न
एक सीमा शुल्क प्रविष्टि नंबर पर अंकों का योग 19 है। सैकड़े का अंक इकाई के अंक का दोगुना है, तथा दहाई का अंक इकाई के अंक से 3 अधिक है। सीमा शुल्क प्रविष्टि नंबर ज्ञात कीजिए।
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सही उत्तर: (B) 874
माना इकाई का अंक = u। तब सैकड़े का अंक h = 2u, दहाई का अंक t = u + 3। योग: 2u + (u+3) + u = 4u + 3 = 19, अतः u = 4। फिर h = 8, t = 7। संख्या = 100×8 + 10×7 + 4 = 874।
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