Find the greatest 5-digit number that is exactly divisible by 15, 18, 21.
Find the greatest 5-digit number that is exactly divisible by 15, 18, 21.
5 अंकों की सबसे बड़ी संख्या ज्ञात कीजिए जो 15, 18, 21 से पूर्णतः विभाज्य हो।
Detailed Solution & Logic
Correct Answer:
99540
LCM(15,18,21) = 630
Greatest 5-digit number = 99999
Required number $= 99999 - (99999 \bmod 630) $
= 99999 - 459
Answer = 99540
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