Question

Find the greatest number of 4 digit which is divisible by 15 20 and 25.​

Answer 1

first find the lcm of 15 20 and 15 i.e. 300 and then find the greatest 4 digit no. i.e. 9999 then divide 9999 from 300 the remainder will be 99 then (required no. is 9999-99=9900) so 9900 is ur ans.

Answer 2

lcm of 15 20 and 25 is 300

greatest 4-digit no 9999

divide: 9999÷300

answer is 99

then substract: 9999-99= 9900

therefore answer is 9900

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