#### Statistics008

##### New member

- Joined
- Oct 5, 2017

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*A gambling machine is programmed to pay out on 10% of the times that it is played. Whether or not the machine pays out on any throw is independent of the outcome on any other throw.*

*By using the formula for the sum of geometric progression(or otherwise) compute the probability that the machine pays out for the first time on an odd numbered throw.*

*A bag contains 5 balls which are number 1,2...,5. If balls are selected one at a time to form a five digit number, What is the probability that:*

*The number formed will be 12345?*

*The middle number will be a 3?*

*Help on these two questions will be greatly appreciated*

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