# Math Help - conversion

1. ## conversion

Can someone help me convert (1011101)2 to base 16 (i.e., hex)

2. Originally Posted by erinneedshelp
Can someone help me convert (1011101)2 to base 16 (i.e., hex)

$(1011101)_2=1\cdot 2^6+0\cdot 2^5+1\cdot 2^4+1\cdot 2^3+1\cdot 2^2+0\cdot 2^1+1\cdot 2^0=93_{10}$

Well, now write $93_{10}$ in base 16...

Tonio

3. Also, when converting from binary to hex (but not decimal), you can split the number into groups of four digits, starting from the right. In this case, 1011101 is represented as 101, 1101. Then you can convert each group into hex separately and then write the resulting hex digits in the same order. So if $101_2$ is, say, $x$ in hex, and $1101_2$ is $y$ in hex, then the whole number is $xy$ (not the product, just two hex digits written together).

4. I want to thank you so very much for your help. I am having a very difficult time understanding a lot of the concepts of Discrete Mathematics. Really, Thank YOU!

5. Thank you so very much. As difficult as this is, it helps knowing that there are others that can help in a dire time of need.