Probability - Law of Addition

Jasmine and Dammian are playing a game of Ludo. If Jasmine rolls the dice, what is the probability that she rolls a 3 or a 5?

• 1/6

• 1/4

• 1/2

• 1/3

Tags

CCSS.HSS.CP.B.7

Pavan, Edgar, and Shay are deciding on a game to play. They can either play basketball or soccer, but not both. If the events are mutually exclusive, what is the probability of either event (playing basketball or soccer) occurring?

• 1

• 0.5

• 2

• 0

Tags

CCSS.HSS.CP.B.7

Victoria has a box that contains 5 red apples and 3 green apples. Gabrialla asks her, 'What is the probability of picking a red apple or a green apple from your box, Victoria?'

• 5/8

• 8/8 or 1

• 3/8

• 2/8

Tags

CCSS.HSS.CP.B.7

Jasmine has a 0.4 chance of winning the city chess championship, and Dammian has a 0.3 chance of winning. What is the probability of either Jasmine or Dammian winning the chess championship?

• 0.7

• 1.0

• 0.5

• 0.2

Tags

CCSS.HSS.CP.B.7

Edgar, Yasmin, and Gabrialla are playing poker with a standard deck of 52 cards. If Edgar picks a card, what is the probability that he picks a heart or a spade?

• The probability of Edgar picking a heart or a spade is 1/52

• The probability of Edgar picking a heart or a spade is 26/52 or 1/2.

• The probability of Edgar picking a heart or a spade is 26/104

• The probability of Edgar picking a heart or a spade is 1/4

Tags

CCSS.HSS.CP.B.7

Shay has a 0.6 chance of hitting a home run in the next baseball game, and Dammian has a 0.2 chance of hitting a home run in the same game. What is the probability of either Shay or Dammian hitting a home run?

• 1.0

• 0.8

• 0.4

• 0.1

Tags

CCSS.HSS.CP.B.7

Edgar, Jasmine, and Victoria are participating in a charity event. They have a bag that contains 4 green ribbons and 6 yellow ribbons. If Edgar is asked to pick a ribbon without looking, what is the probability that he will pick either a green ribbon or a yellow ribbon?

• 4/6 + 6/4 = 10/10

• 4/10 x 6/10 = 24/100

• 4/10 - 6/10 = -2/10

• 4/10 + 6/10 = 10/10 or 1

Tags

CCSS.HSS.CP.B.7

Josh has a 0.7 chance of hitting a home run in the next baseball game, and Victoria has a 0.5 chance of scoring a goal in her next hockey match. What is the probability of either Josh hitting a home run or Victoria scoring a goal in their next games?

• 0.9

• 0.35

• 0.2

• 1.2

Tags

CCSS.HSS.CP.B.7

Shay, Josh and Jasmine are watching Joseph flip a coin. What is the probability that Edgar will guess it correctly as heads or tails?

• 1

• 0.5

• 2

• 0.25

Tags

CCSS.7.SP.C.7A

Jasmine is organizing a charity event and the probability of her friend Victoria attending the event is 0.8. On the other hand, the probability of her friend Shannon attending the event is 0.4. What is the probability of either Victoria or Shannon attending the event?

• 0.8 + 0.4 = 1.2

• 0.8 + 0.4 - (0.8 * 0.4) = 0.92

• 0.8 * 0.4 = 0.32

• 0.8 - 0.4 = 0.4

Tags

CCSS.HSS.CP.B.7