# Waecmaths

Title waecmaths question
Question 6

If a number is chosen at random from the set $\{x:4\le x\le 15\}$ , find the probability that it is a multiple of 3 or a multiple of 4

Question 19
 Number of pets 0 1 2 3 4 Number of students 8 4 5 10 3

The table shows the number of pets kept by 30 students in a class. If a students is picked at random from the class . What is the probability that he/she kept more than one pet?

Question 47

In an athletics competition, the probability that an athlete wins a 100 m race is $\tfrac{1}{8}$ and the probability that he wins in high jump is $\tfrac{1}{4}$. What is the probability that he wins only one of the events

Question 31

A fair die is thrown two times. What is the probability that the sum of the scores is at least 10?

Question 42

A bag contains 5 red and 4 blue identical balls. If two balls are selected at random from the bag, one after the other, with replacement, find the probability that the is red and the second blue

Question 41

A box contains black, white and red identical balls. The probability of picking a black ball at random from the box is $\tfrac{3}{10}$  and the probability of picking a white ball at random is $\tfrac{2}{5}$. If there are 30 balls in the box, how many of them are red?

Question 47

Given the set A ={2, 4, 6, 8} and B = {2, 3, 5, 9}.

If a number is selected at random from set B. what is the probability that the number is prime

Question 48

Given the set A ={2, 4, 6, 8} and B = {2, 3, 5, 9}.

If a number is picked at random from each of the two sets, what is the probability that their product is odd?

Question 49

Given the set A ={2, 4, 6, 8} and B = {2, 3, 5, 9}.

If a number is picked at random from each of the two sets, what is the probability  that their difference is 6 or 7

Question 27

If the probability of an event occurring is x, what is the probability of the event not occurring?

Question 7

A fair coin is tossed three times. Find the probability of getting two head and one tail

Question 16

The ratio of boys to girls in a class is 5:3, find the probability of selecting at random a girl from the class

Question 29

The probabilities that kebba, Ebou, and Omar will hit a target are $\tfrac{2}{3},\tfrac{3}{4}$and $\tfrac{4}{5}$ respectively. Find the probability that only Kebba will hit target

Question 47

A letter is selected from the letter of the English alphabet, What is the probability that letter selected is from the word MATHEMATICS?

Question 8

A fair die is tossed once, what is the probability of obtaining neither 5 nor 2

Question 15

The probability that John and James passes an examination are $\tfrac{3}{4}$ and $\tfrac{3}{5}$ respectively. Find the probability of both boys failing the examination.

Question 32

In a class of 45 students, 28 students offers Chemistry and 25 offers Biology. If each students offers at least one of the two subjects. Calculate the probability that a student selected at random from the class offers Chemistry only.

Question 45

Two bottles are drawn with replacement a crate containing 8 coke, 12 fanta and 4 sprite bottles. What is the probability that the first is coke and the second is not coke?

Question 29
 Number of goals 1 2 3 4 5 6 7 Number of teams 3 1 6 6 4 2 3

The table shows the distribution of goal scored by 25 teams in a football competition.

Question 19

There are 8 boys and 4 girls in a lift, What is the probability that the first person who steps out of the lift will be a boy

Question 34

A box contains 2 white and 3 blue identical balls. If two balls are picked at random from the box, one after the other with replacement, what is the probability that they are of different colors?

Question 46

A box contains 5 red, 6 green and 7 yellow pencils of the same size. What is the probability of picking a green pencil at random