# Waecmaths

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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 |
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Question 19 |
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 |
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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 |
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Question 31 |
A fair die is thrown two times. What is the probability that the sum of the scores is at least 10? |
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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 |
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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? |
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Question 47 |
Given the set If a number is selected at random from set |
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Question 48 |
Given the set If a number is picked at random from each of the two sets, what is the probability that their product is odd? |
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Question 49 |
Given the set If a number is picked at random from each of the two sets, what is the probability that their difference is 6 or 7 |
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Question 27 |
If the probability of an event occurring is |
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Question 7 |
A fair coin is tossed three times. Find the probability of getting two head and one tail |
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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 |
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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 |
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Question 47 |
A letter is selected from the letter of the English alphabet, What is the probability that letter selected is from the word |
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Question 8 |
A fair die is tossed once, what is the probability of obtaining neither 5 nor 2 |
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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. |
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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. |
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Question 45 |
Two bottles are drawn |
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Question 29 |
The table shows the distribution of goal scored by 25 teams in a football competition. |
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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 |
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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? |
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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 |