Question

find the greatest number of four digits which is divisible by 15,20 and 25

Answer 1

biggest 4 digit number divisible by 15,20,25 is 9900

Answer 2

Answer:

Hey Mate,

Step 1 : Take the LCM of 15, 20, 25

LCM = 300

Step 2 : Divide the largest 4 digit number by 300.

=> 9999/ 300

=> 33.33..

STEP 3 : Don't take the value after point. Just multiple 33 with 300 ., You will get largest 4 digit number which multiple by 15, 20, 25 all.

÷> 300 × 33

=> 9,900

So,

9,900 is a largest four digit number which can divide by 15, 20 and 25.