After The Flop Example
The example asks you to choose the number of outs. For your hand you have 10 outs.
They are the four 10′s that would complete your straight, the three remaining A’s that would pair your A, and the three remaining K’s that would pair your K and give you top pair.
The next part of the example asks you whether you should fold, call or raise.
With 10 outs after the flop, the odds against you making your hand are 1.6 to 1. With the pot of $60 and your required bet of $20 to call, the pot is offering $60:$20 or 3.0 to 1 odds. The pot odds (3.0 to 1) being greater than the odds against making your hand (1.6 to 1), it is worthwhile to call the bet.