Solution:
Greatest number of 4-digits is 9999.
LCM of 15, 25, 40 and 75 is 600.
On dividing 9999 by 600, the remainder is 399.
Then, Required number (9999 - 399) = 9600.
The greatest number of four digits which is divisible by 15, 25, 40 and 75 is
The greatest number of four digits which is divisible by 15, 25, 40 and 75 is
