Question

Find the greatest number of four digits which is divisible by 15, 20 and 25.​

Answer 1

The greatest number of four digit is 9999

Answer 2

Answer:

9900

Step-by-step explanation:

LCM of 15, 20 & 25 = 300

The L.C.M. of given numbers is 300. It means greatest number of four digits which is divisible by 15 20 and 25 must be divisible by 300.

Greatest 4 digit no. = 9999

Divide 9999 by 300.

$=\frac{9999}{300}\\\\\\= 33\frac{99}{300}$

The quotient is 33 and reminder is 99.

$=9999-99\\\\\\=9900$

Hence, the greatest number of four digits which is divisible by 15,20 and 25 is 9900.

Hope it helps you :)