Category: PROBABILITY

K.C.S.E Mathematics Q & A - MODEL 2000PP1QN18

8/7/2020

Form 3 Mathematics | Topical Questions and Answers

In form 1 class there are 22 girls and boys. The probability of a girl completing the secondary education course is 3 whereas that of a boy is ⅔

(a) A student is picked at random from class. Find the possibility that,
- (i) The student picked is a boy and will complete the course
- (ii) The student picked will complete the course
(b) Two students are picked at random. Find the possibility that they are a boy and a girl and that both will not complete the course.

ANSWER

K.C.S.E Mathematics Q & A - MODEL 1999PP1QN07

25/6/2020

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Free 1999 K.C.S.E Mathematics Topical Question & Answers Paper 1

Two baskets A and B each contain a mixture of oranges and limes, all of the same size. Basket A contains 26 oranges and 13 limes. Basket B contains 18 oranges and 15 limes. A child selected a basket at random and picked a fruit at a random from it.

(a) Illustrate this information by a probabilities tree diagram
(b) Find the probability that the fruit picked was an orange

ANSWERS

K.C.S.E Mathematics Q & A - MODEL 1999PP1QN07

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K.C.S.E Mathematics Q & A - MODEL 1998PP2QN14

13/6/2020

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Free 1998 K.C.S.E Mathematics Topical Question & Answers Paper 2

A science club is made up of boys and girls. The club has 3 officials. Using a tree diagram or otherwise find the probability that:

(a) The club official are all boys
(b) Two of the officials are girls

ANSWERS

K.C.S.E Mathematics Q & A - MODEL 1998PP2QN14

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K.C.S.E Mathematics Q & A - MODEL 1998PP1QN25

7/6/2020

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25. If a fowl is treated, probability of dying is 1/10 while if not treated the probability is 7/10 calculate the probability that, a fowl picked at random from the 36 fowl is

If a fowl is treated, probability of dying is ¹ ⁄ ₁₀ while if not treated the probability is ⁷ ⁄ ₁₀ calculate the probability that, a fowl picked at random from the 36 fowl is

(i) treated with the drug and will die
(ii) Not treated with the drug and will die
(iii) Not treated with the drug and will not die

ANSWER

K.C.S.E Mathematics Q & A - MODEL 1998PP1QN25

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K.C.S.E Mathematics Q & A - MODEL 1998PP1QN24

7/6/2020

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K.C.S.E Mathematics Q & A - MODEL 1998PP1QN24

In a livestock research stations a new drug for a certain fowl disease is being tried. A sample of 36 fowls were diagnosed to have the disease. Twenty (20) fowls were treated with the drug and the rest were not.

(a) Calculate the probability that a fowl picked at random is
- (i) treated with the drug
- (ii) Not treated with the drug

ANSWER

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K.C.S.E Mathematics Q & A - MODEL 1997PP1QN21

22/5/2020

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The water supply in a town depends entirely on two water pumps, A and B.
The probability of pump A filling is 0.1 and the probability of pump B failing is 0.2. Calculate the probability that
(a) Both pumps are working
(b) There is no water in the town
(c) Only one pump is working
(d) There is some water in the town

KNEC MARKING SCHEME

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K.C.S.E Mathematics Q & A-MODEL 1995PP2QN19

12/5/2020

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The probabilities that a husband and wife will be alive 25 years from now are 0.7 and 0.9 respectively.

Find the probability that in 25 years time,

(a) Both will be alive
(b) Neither will be alive
(c) One will be alive
(d) At least one will be alive

MARKING SCHEME

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K.C.S.E Mathematics Q & A-MODEL 1995PP1QN8

7/5/2020

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Two baskets A and B each contains a mixture of oranges and lemons. Basket A contains 26 oranges and 13 lemons. Basket B contains 18 oranges and 15 lemons. A child selected basket at random and picked at random a fruit from it. Determine the probability that the fruit picked was an orange.

MARKING SCHEME

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KCSE MATHEMATICS QUESTIONS AND SOLUTIONS

Topically Analysed

K.C.S.E Mathematics Q & A - MODEL 2000PP1QN18

Form 3 Mathematics | Topical Questions and Answers

18

Related Questions on Probability

K.C.S.E Mathematics Q & A - MODEL 1999PP1QN07

Free 1999 K.C.S.E Mathematics Topical Question & Answers Paper 1

07

K.C.S.E Mathematics Q & A - MODEL 1998PP2QN14

Free 1998 K.C.S.E Mathematics Topical Question & Answers Paper 2

K.C.S.E Mathematics Q & A - MODEL 1998PP1QN25

If a fowl is treated, probability of dying is ¹ ⁄ ₁₀ while if not treated the probability is ⁷ ⁄ ₁₀ calculate the probability that, a fowl picked at random from the 36 fowl is

K.C.S.E Mathematics Q & A - MODEL 1998PP1QN24

In a livestock research stations a new drug for a certain fowl disease is being tried. A sample of 36 fowls were diagnosed to have the disease. Twenty (20) fowls were treated with the drug and the rest were not.

UPLOAD YOUR ANSWER

K.C.S.E Mathematics Q & A - MODEL 1997PP1QN21

K.C.S.E Mathematics Q & A-MODEL 1995PP2QN19

The probabilities that a husband and wife will be alive 25 years from now are 0.7 and 0.9 respectively.

K.C.S.E Mathematics Q & A-MODEL 1995PP1QN8

Two baskets A and B each contains a mixture of oranges and lemons. Basket A contains 26 oranges and 13 lemons. Basket B contains 18 oranges and 15 lemons. A child selected basket at random and picked at random a fruit from it. Determine the probability that the fruit picked was an orange.

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KCSE MATHEMATICS QUESTIONS AND SOLUTIONS

Topically Analysed

Form 3 Mathematics | Topical Questions and Answers

18

Related Questions on Probability

Free 1999 K.C.S.E Mathematics Topical Question & Answers Paper 1

07

Free 1998 K.C.S.E Mathematics Topical Question & Answers Paper 2

If a fowl is treated, probability of dying is 1 ⁄ 10 while if not treated the probability is 7 ⁄ 10 calculate the probability that, a fowl picked at random from the 36 fowl is

​In a livestock research stations a new drug for a certain fowl disease is being tried. A sample of 36 fowls were diagnosed to have the disease. Twenty (20) fowls were treated with the drug and the rest were not.

UPLOAD YOUR ANSWER

The probabilities that a husband and wife will be alive 25 years from now are 0.7 and 0.9 respectively.

Two baskets A and B each contains a mixture of oranges and lemons. Basket A contains 26 oranges and 13 lemons. Basket B contains 18 oranges and 15 lemons. A child selected basket at random and picked at random a fruit from it. Determine the probability that the fruit picked was an orange.

Categories

Archives

Author

HIGH SCHOOL RESOURCES

COLLEGE RESOURCES

FREE NOVELS

PRIMARY SCHOOL RESOURCES 8-4-4

PRIMARY SCHOOL RESOURCES CBC

Send Us a Message

If a fowl is treated, probability of dying is ¹ ⁄ ₁₀ while if not treated the probability is ⁷ ⁄ ₁₀ calculate the probability that, a fowl picked at random from the 36 fowl is

In a livestock research stations a new drug for a certain fowl disease is being tried. A sample of 36 fowls were diagnosed to have the disease. Twenty (20) fowls were treated with the drug and the rest were not.