If the sample space for an experiment contains the off numbers from 1 to 20, how many outcomes will be included in the event "less than 12"?

The off numbers from 1 to 20 are: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19.

The event "less than 12" includes the numbers 1, 3, 5, 7, 9, and 11.
Therefore, there are 6 outcomes included in the event "less than 12".