The greatest number of five digits divisible by 15,36,21?
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greatest 5 digit no. is 99999
The greatest number of five digits divisible by 15,36,21 should be divisible by LCM(15,36,21)
LCM(15,36,21) = 1260
now remainder of 99999/1260 = 459
as 99999 = 1260*79 + 459
so
The greatest number of five digits divisible by 15,36,21 is 99999-459= 99540
The greatest number of five digits divisible by 15,36,21 should be divisible by LCM(15,36,21)
LCM(15,36,21) = 1260
now remainder of 99999/1260 = 459
as 99999 = 1260*79 + 459
so
The greatest number of five digits divisible by 15,36,21 is 99999-459= 99540
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