The no. is 35.
100000 2847239582
2178
5037 = 248 = 3059
88
81.
45
100000 2847239582
Find a four digit number whose digits will be reversed when multiplied by nine?
192
If the number with the digits reversed can have a leading 0 so that it is a 1-digit number, then 16. Otherwise 13.
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
2178
The number is 36
47 Impossible problem!
2178 * 4 = 8712
5037 = 248 = 3059