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Start learning 50% faster. Sign in nowPrime factorization of 15 = 3 1 X 5 1 Prime factorization of 24 = 2 3 X 3 1 Prime factorization of 30 = 2 1 X 3 1 X 5 1 LCM of (15, 24, and 30) = 2 3 X 3 1 X 5 1 = 8 X 3 X 5 = 120 Least 4-digit number divisible by 120 = 1,080 So, required number = 1080 + 5 = 1,085
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