How many 4 digit palindrome numbers can be divided by 7 without remainder?

Answer 1

0.5714

Answer 2

0000

0770

1001

1771

2002

2772

3003

3773

4004

4774

5005

5775

6006

6776

7007

7777

8008

8778

9009

9779

C program used to find answer: #include <stdio.h>

int reverse(int n)

{

return ((n/10)+(n%10)*10);

} int main(int argc, char **argv)

{

unsigned short i,n;

for(i=00;i<=99;++i) {

n=i*100+reverse(i);

if (n%7==0) printf("%04d\n",n);

} return 0;

}