1. A die is rolled, find the probability of getting; a. a o b. a composite number c. a 3 d. a number divisible by 3 2. A card is drawn randomly from a standard deck of 52 cards, find the probability of getting; a. a spade card b. a number 9 card c. a red Queen d. a black King 3. A bag contains 7 white balls and 11 orange balls. If the marbles have the same sizes and shapes, find the probability of getting: a. a green ball b. a white ball c. not a white ball 4. A pair of dice is rolled. Find the probability of getting;
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Answer:
1.
a. The probability of getting a 0 is 0, as there is no 0 on a standard dice.
b. The composite numbers on a dice are 4 and 6. So, the probability of getting a composite number is 2/6 or 1/3.
c. The probability of getting a 3 is 1/6, as there is only one face with 3 dots.
d. The numbers on a dice that are divisible by 3 are 3 and 6. So, the probability of getting a number divisible by 3 is 2/6 or 1/3.
2.
a. There are 13 spade cards in a deck of 52 cards. So, the probability of getting a spade card is 13/52 or 1/4.
b. There are 4 number 9 cards in a deck of 52 cards. So, the probability of getting a number 9 card is 4/52 or 1/13.
c. There are 2 red Queens in a deck of 52 cards. So, the probability of getting a red Queen is 2/52 or 1/26.
d. There are 2 black Kings in a deck of 52 cards. So, the probability of getting a black King is 2/52 or 1/26.
3.
a. There are no green balls in the bag. So, the probability of getting a green ball is 0.
b. The probability of getting a white ball is 7/18, as there are 7 white balls out of a total of 18 balls.
c. The probability of not getting a white ball is 11/18, as there are 11 orange balls out of a total of 18 balls.
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