Probability

{blue, red, green, yellow, purple, pink, green, orange, blue, yellow}

{blue, yellow, green}

{blue, red, green,  yellow, purple, pink, green, orange }

{blue, green}

A'

$A\cup B$

$A\cap B$

B'

37/195

37/180

180/195

37/750

getting a haircut and then getting a manicure

rolling a dice: getting a 2 and then a 3

marbles in box: getting a blue, removing it, and then a red

52 card deck: getting 4 queens in a row without replacing

bowling: getting a spare and then a strike

0.48

0.048

0.52

0.052