#include<cstdio>
#include<cstring>
int a[10010];
int main()
{
	int n,m,t,i,sum,j;
	memset(a,0,sizeof(a));
	for(i=2;i<10002;i++)
	{
		sum=1;
		a[i]=a[i-1];
		for(j=2;j<=(i/2);j++)
		{
			if(i%j==0)
			  sum=sum+j;
		}
		if(sum==i)
		  a[i]++;
	}
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d%d",&n,&m);
		if(n>m)
		  printf("%d\n",a[n]-a[m-1]);
		else
		  printf("%d\n",a[m]-a[n-1]);
	}
	return 0;
}

#include <iostream>
#include <stdio.h>

using namespace std;

int main()
{
    int 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0,0,0,0,0,0};
    int cyc;
    cin>>cyc;
    while(cyc--)
    {
        int left,right;
        cin>>left>>right;
        if(left>right)
        {
            swap(left,right);
        }
        int res=0;
        for(int i=left;i<=right;i++)
        {
            res+=result[i]==1?1:0;
        }
        cout<<res<<endl;
    }
    return 0;
}