Number Puzzle 3

Show off your maths genius, you maths genius you.

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Number know-how

What in god's name is going on here? We'll tell you: it's a bunch of numbers. Moreover, you've got to circle six of them so they add up to 21. Don't use a marker pen on the screen, it'll make a mess.
Number know-how

Yes, this one's as much a test of your cheeky ingenuinity as it is of your number skills. By which we mean, you sort of bend the rules by circling two 1s together to make an 11.

Number know-how