MATHEMATICS 10 SEMI – FINAL

Brian likes to wear colored shirts. He has 10 shirts in the closet. Three of these are blue, four are in different shades of red, and the rest are of mixed or different colors. What is the probability that he will wear a blue or a red shirt?

• 7/10

• 3/10

• 4/10

• 5/10

The spinner on the left is spun. What is the probability of a spin that results in an even number or a number less than 4?

• 1/4

• 3/8

• 1/2

• 5/8

In a deck of card, what is the probability of getting a king or queen?

• 2/13

• 3/13

• 4/13

• 5/13

In rolling a die, what is the probability of getting 3 or 4?

• 1/2

• 3/13

• 1/3

• 4/5

The events A and B are mutually exclusive. Which of the following is true about the probability of A or B?

• P(AorB)=P(A)+P(B)                                                       

• P(AorB) = P(A) + P(B) – P(A and B)                                

• P(AorB) = P(A) – P(B)     

• P(AorB)=P(A)–P(B)+P(A and B)

A number is drawn at random from the set {1,2,3,...15}. Find the probability that the number chosen is a multiple of 2 or a multiple of 5.

• 1/5

• 2/5

• 3/5

• 4/15

Which of these is a mutually exclusive event?

• A die rolling a 4 on the first throw and then a 6 on a second throw.

• A pair of dice rolling 2 and 2 totaling 6

• A pair of dice rolling 4 or 2                                                              

• A pair of dice rolling 6 or even number

Which of these is a non- mutually inclusive event?

• Rolling an 8 on a six-sided die                                             

• Getting a head and a tail on a single coin toss

• Getting four 5 balls in a row from a lottery machine

• Picking a diamond or a Jack from a deck of card

Which of the following is NOT a valid probability value?

• 11/15

• 5/3

• 20%

• 0.68

What is the term used to describe events that do not affect each other's occurrence?

• Dependent Events

• Independent Events

• Mutually Exclusive Events

• Not Mutually Exclusive Events