0123456789
00112233445566778899 double the hole thing or 01234567890123456789 twice together
0123456789
To round to the nearest 100, look at the 10s digit to decide whether to round up or down. The 10s digit of 6963 is 6 which is 5 or more, so round up: 6963 → 7000 to the nearest hundred.
1,219,326,311,126,352,690
.0123456789
0123456789
00112233445566778899 double the hole thing or 01234567890123456789 twice together
0123456789
0123456789
0123456789
0123456789
0123456789
If the numbers are not repeated then the highest 5 digit even number to be made out of 0123456789 is : 98764.
0987654321
This is a numeric palindrome -- spelled (or in this case numbered) the same way forward and backward.
Arabic numbers ٠١٢٣٤٥٦٧٨٩ 0123456789