Question
Find the least number of four digits which is exactly
divisible by 5, 15 and 25?Solution
Least four digit number = 1000 So when 1000 is divided by LCM of 5,15 & 25 (i.e.75) , remainder is 25. So when gap of divisor & remainder is added to 1000, it will be completely divided by 75 & answer will be = 1000 + (75-25) = 1000 + 50 = 1050.
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