A little funny quiz I've came up with. Guess programming language:

1. '1' + 1 = 11
2. '1' + 1 = 2
3. '1' + 1 = 50
4. '1' + 1 = TypeError

Answers below

1. Javascript. Press F12 in your browser (open dev tools console) and try for yourself

> '1' + 1
< "11"

2. PHP

echo '1' + 1;
2

3. C. '1' has char type, which is also an ASCII code of the symbol '1', which is 49. Plus one makes it 50.

printf("%d", '1' + 1);
50

4. Python.

print '1' + 1;
TypeError: cannot concatenate 'str' and 'int' objects