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The greatest 4-digit number exactly divisible by 5, 15, 20 is1). 99902). 99603). 99804). 9975 |
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Answer» To be divisible by all three of 5, 15 and 20, the NUMBER must be divisible by LCM of 5, 15 and 20 LCM of 5, 15 and 20 is 60 (= 2 × 3 × 2 × 5). Thus, the number must be a multiple of 60. ⇒ 9999/60 = 166.65 ∴ Largest multiple of 60 less than 9999 is: 60 × 166 = 9960 Hence, 9960 is the answer. |
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