This is not possible. You can make a new account to learn a new language or can make yourself lists which katas you haven't trained in both languages.

In your profil you can see which katas you have solved in which language.

It is about the next biggest number, not a bigger or the biggest number that you can build with the same digits.

2710 is bigger then 2017 but also bigger then 2071. 2071 is the next biggest number.

Hello,

the first number says how many points someone scores in the game.
The second number says how long a player was in the game.

The task is to find out: If the player would be the whole time in the game (48 minutes) and has the same scorerate how many points would he make.

I hope my answer makes the task for you clearer.

Under "Kata" you can chose different languages and see the katas in the language. You can also chose if you see the katas you haven't solved yet.
If I chose an other language(e.g. Javascript) all katas I solve in the other language (e.g. Java) is already solved. So it is very difficult to find out which katas I have solved in one language and which in another.

Is would be helpful when you completed a kata in one language, it will displayed as unsolved for all the other languages till you solve the kata in this language, too.
So you can learn different languages at the same time.