Riddles, one at a time

Without lifting your pen and without going over any line twice, which figure can you draw?

Count the lines at each dot. More than 2 odd dots means no.

Without lifting your pen and without going over any line twice, which figure can you draw?

Count the lines at each dot, including where the X lines cross.

Which row of lamps shows 22?

Start with the biggest lamp value that fits into 22.

Which tile belongs in the middle?

It needs a dot and stripes.

What fraction of the square is gold?

Find the dark area instead: one middle square plus four thin slivers.

Colours mix like paint. Which door does the beam light, and in what colour?