SBI PO Prelims practice question
What is the smallest 4-digit number which is exactly divisible by 9, 10 and 20?
From a SBI PO Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 1080
LCM(9, 10, 20) = 180. Smallest 4-digit number 1000 ÷ 180 leaves 100; next multiple = 1000 + 80 = 1080. Answer = 1080.
हिंदी में प्रश्न
सबसे छोटी 4 अंकों की वह संख्या कौन-सी है जो 9, 10 और 20 से पूर्णतः विभाज्य है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 1080
ल.स.(9, 10, 20) = 180। 4 अंकों की सबसे छोटी संख्या 1000 ÷ 180 पर शेष 100; अगला गुणज = 1000 + 80 = 1080। उत्तर = 1080।
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