+523 A spinner is divided into four equal sections that are numbered 2, 3, 4, and 9. The spinner is spun twice.
How many outcomes have a product less than 20 and contain at least one even number?
+128448
{ 2, 3, 4 ,9 }
Possible outcomes = [ P(4,2) + 4 ] = [12 + 4] = 16
It may be easier to look at the possibilities that don't work
9 paired with itself, 4 or 3 are not favorable outcomes
So....this is 5 unfavorable outcomes (9,9), (9,4), (4, 9), (9,3), (3,9)
3 paired with itself is also unfavorable
So....this is 6 unfavorable outcomes
So....there are 10 favorable outcomes
(2,2) (2,3) (3,2) (2,4) (4,2) (2,9, (9,2), (3,4) (4,3) (4,4)
