Question

Victoria spins a spinner 500 times.

Answer 1

P(sum is less than or equal to 3) =

P(1, 1) + P(1, 2) + P(2, 1) =

(1/5)(1/3) + (1/5)(1/3) + (1/5)(1/3) = 3/15 = 1/5

20% × 500 = 100

This event can be expected about 100 times.