What will be the hexadecimal of the binary number 11011?

1B

we will first devide 11011 into groups of four digits starting from the least significant working our way to the right.that means we will have the first set of digits as 1011 which in hexadecimal numbering corresponds to B.That means we are left with only one digit that is 1.What we need to do is make it to be a set of four digits and to change a number without changing its meaning you add a zero before it.so here since we need four digits we will add thre zeros before it hence getting 0001 which corresponds to 1 in hexadecimals.therefore binary number 11011 will be equivalent to hexadecimal 1B

Hexadecimal digits can either be 0-9 or A-F,since hexadecimal is base 16.In our case write a small 1 above the last digit,we are not raising anything to any power but to see what digit means what.so proceed and write 2 above the second last digit,4 above the third digit from right,8 above the fourth digit from right and 16 above the first digit.

16 8 4 2 1

1 1 0 1 1

16 8 0 2 1

each digit represents a different power of 2.So 1 corresponds with 1 so below write 1,2 corresponds with 1 below write 2,4 corresponds with 0 below write 0 8 corresponds with 1 below write 8 and 16 corresponds with 1 below write 16.In our case the numbers written below are in bold.then add all the numbers in bold 16+8+0+2+1=27.so the binary number 11011 converts to 1B in the hexadecimal chart.