I presume by hexa you mean hexadecimal, which is base 16. A hexadecimal number can be considered a polynomial in a variable whose value is 16, the coefficients being whole numbers ranging from 0 to 15. The hexadecimal digits after 9 are usually written as the letters A through F (sometimes in lower case); A means 10, B means 11, and so on. Just plug in 16 for the variable and evaluate the polynomial. For example, consider the hexadecimal number 3E7. The 7 is in the units place, the E, meaning 14, is in the 16's place, and the 3 is in the 162 (256) place. So the value of this number, in decimal, is 3 x 256 + 14 x 16 + 7, which works out to be 999 (so help me, I picked those digits at random!).
That can't be an octal number; it has an 8 in it.
0xFFEF + 1 = 0xFFF0.
The answer will depend on what you want to convert into a decimal number.
multiply the decimal by 100 to convert it into a percent.
The answer depends on what you wish to convert to a decimal. The smell of a lemon you cannot.
It is C
That can't be an octal number; it has an 8 in it.
(159)decimal = (9F)HEX
0xFFEF + 1 = 0xFFF0.
You cannot convert a decimal into a decimal!
0.2 already is a decimal. There is nothing to convert.0.2 already is a decimal. There is nothing to convert.0.2 already is a decimal. There is nothing to convert.0.2 already is a decimal. There is nothing to convert.
You don't use binary because it's very hard reading a bunch of zeros and ones. You use hexa because each hexa digit corresponds to 4 bits, this makes it very easy to convert from hexa do binary and vice versa. For a similar reason you use octal because each digit corresponds to 3 binary digits. Example: 0101 10102 Has 8 binary digits so it will be 2 hexa digits: 01012 = 516 , 10102 = A16 So the full number will be: 0101 10102 = 5A16 This works for hexa and octal because 16 and 8 are powers of 2, it would also work for 4, 32, 64 or any other ower of 2 . Since 10 for decimal notation is not a power of 2 converting from binary is not so direct.
Convert 29.53 to decimal
The answer will depend on what you want to convert into a decimal number.
multiply the decimal by 100 to convert it into a percent.
If the number is already in decimal form, you do not need to do anything to "convert" it to decimal!
In hexadecimal you carry on 16. In octal you carry on 8. You figure out the rest, its good for you it builds character.