5037 = 248 = 3059
100000 2847239582
2178
81.
To reverse all the digits of an integer, you can use the following algorithm: Initialize a variable to store the reversed number. While the original number is greater than zero, extract the last digit using the modulus operator (%), append it to the reversed number by multiplying the current reversed number by 10 and adding the extracted digit. Then, remove the last digit from the original number by performing integer division by 10. Finally, handle any potential negative signs if needed.
7 two-digit numbers.
Find a four digit number whose digits will be reversed when multiplied by nine?
If the number with the digits reversed can have a leading 0 so that it is a 1-digit number, then 16. Otherwise 13.
45
An eight digit number with one zero cannot remain the same when its digits are reversed. It must have an even number of 0s.
17
100000 2847239582
2178
The number is 36
47 Impossible problem!
2178 * 4 = 8712
192
81.