The greatest number of 6 digits wch is exactly divisible by 27,45,60,72 and 96 is?
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To find the largest 6 digit multiple of these numbers, we can find the LCM of these numbers, and the required number will be a multiple of the LCM
So,
27 = 3 x 3 x 3
45 = 3 x 5 x 3
60 = 3 x 4 x 5
72 = 3 x 3 x 2 x 2 x 2
96 = 3 x 2 x 2 x 2 x 2 x 2
so LCM = 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5
LCM = 4320
To find largest 6 digit multiple of 4320, we divide 4320 by largest 6 digit number i.e. 999999, we get
999999 / 4320 = 231.48
So, largest multiple will be 4320 x 231 = 997920
So,
27 = 3 x 3 x 3
45 = 3 x 5 x 3
60 = 3 x 4 x 5
72 = 3 x 3 x 2 x 2 x 2
96 = 3 x 2 x 2 x 2 x 2 x 2
so LCM = 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5
LCM = 4320
To find largest 6 digit multiple of 4320, we divide 4320 by largest 6 digit number i.e. 999999, we get
999999 / 4320 = 231.48
So, largest multiple will be 4320 x 231 = 997920
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