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# Discussion

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

• A.9000
• B.9400
• C.9600
• D.9800

Greatest number of 4-digits is 9999.
L.C.M. of 15, 25, 40 and 75 is 600.
On dividing 9999 by 600, the remainder is 399.
Required number,
$$(9999 - 399) = 9600$$

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