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1. The water supply in a school depends entirely on two water pumps, K and L. The probability of pump K failing is 0.12 and the probability of pump L failing is 0.18. (a) Draw a tree diagram, to represent the information. (b) From the diagram, find the probability that; i) Both pumps are working ii) There is no water in school (2marks) (2marks) (2marks) iii) Only one pump is working (2marks) iv) There is some water in school (2marks)
Sagot :
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