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The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:

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15= 3x5

25=5x5

40=2x2x2x5

75=3x5x5

LCM(15, 25, 40, 75) = 2x2x2x3x5x5= 600

Greatest Four digit number = 9999

9999 = 600x16+399

Greatest Four digit number which is divisible by 15,25,40,75 is (9999-399) = 9600.

Posted by

Ravindra Pindel

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