Question

How many integer bw 1 and 566 are.Divisible by either 3 or 5?

Answer 1

For a number to be divisible by 3 and 5, it should be divisible by LCM(3,5) = 15.

There are 20 such numbers between 1 and 300 (300/15 = 20).

Also, for a number to be divisible by 3, 5 and 7, it should be divisible by LCM(3,5,6)=105.

There are 2 such numbers between 1 and 300 (105 and 210).

So the toltal number of integers between 1 and 300 (both inclusive) that are divisible by 3 and 5 and not by 7 is 18.


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Answer 2

Answer:

hello friend, your answer is here:

ans:264

Step-by-step explanation:

#include<iostream>

using namespace std;

int main()

{

   int num=0,i;

   for(i=1;i<566;i++)

   {

       if(i%3==0 || i%5==0)

       {

           num++;

       }

   }

   cout<<num;

}