Answer:
1/4
Step-by-step explanation:
here we have 4 expectations from 8 expectations from 2 spins.
But we have to multiply the outcomes of 4 each turn with 4 the second turn to see 16 outcomes.
For the first we have 1/4 and second we clearly have 3/4
We then add the outcomes 4 and multiply the bottom = 4/16
this = 1/4
Which is the same as subtraction.
1/2 - 1/4 = 1/4
