#### Hugo’s riddle - Answer to december’s riddle

Last month, we gave you the riddle our web developper Hugo made for you. Here is the answer: How wonderful to drink **coffee** in the morning ("café" in French)

__Here are the explanations:__ the numbers 1100 1010 1111 1110 are written in binary code which represent a way to count in base-2.
Usually, we use a base-10 to count, which means that we use 10 numbers (0 to 9).
In base-2, we only use 2 numbers (0 and 1), and so to count in binary code, things are more abstract: 0 = 0, 1=1, 2 = not 2, there is no number 2, and so we write it 10. Following the same logic, 3 = 11, 4 = 100…

But how do we find **CAFE**?

Numbers were grouped in 4 groups, one for each letter. If we convert them in base-10, we have 12 10 15 14. But it would be a mistake to stop here, because we need to convert them in base 16 (also known as hexadecimal language). Indeed, in base-16, we can use higher value, because we use letters to continue counting after 9. In hexadecimal language 9 = 9, 10 = A, 12 = C, 15 = F, 16 = 10.

So 12 = C, 10 = A, 15 = F, 14 = E => **CAFE**

__FACT__ When you work with colors, you’ll see some colors are named in a weird way: #RRVVBB. This is annoter use of the hexadecimal language which allows us to share an information in a little size. With only 6 characters, we can code up to 16 millions of different colors!