The best choice would be either 30,15, or 10, because there is 2 30 min. in an hour. there is 4 15 min. in an hour and 6 10minutes in an hour.
The same as you would a rational number. Its distance from zero will represent the number, whether it is rational or irrational.
No, but 65456 would represent a palindromic number.
Besides 60, it would be 30.
If the number is 'z', then five less than twice the number is ( 2z - 5 ).
Exactly 28 .
That would be Roman Numerals.
It is a nonsense number. It could be meant to be 75, but that would be LXXV. It could also be intended to represent 25, (50-25) but the correct format would be XXV.
Divide 565 seconds by 60 to get the number of minutes. This would be 9 minutes and 25 seconds.
To change minutes to seconds multiply the number of minutes by 60.
it is called the Mode
That would be a pure number, without a variable.
It would depend on the person and what the numbers represent