Question

How many numbers between 400 and 800 are
divisible by 4, 5 and 6? ​

Answer 1

Step-by-step explanation:

This is the Solution of your question and explaination of step by step.

Answer 2

Answer:

7

Step-by-step explanation:

The LCM of 4,5 and 6 = 60

The first number divisible by 60 between 400 and 800 is 420 and last number is 780

We can treat it as an AP to get the number of multiples of 60 as

Tn=a+(n-1)d,or

720= 420+(n-1)*60,or

360=(n-1)*60,or

n-1=60

so,n=7

There are seven numbers between 400 and 800