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GATE EC 2017 Set 2 — Question 29

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NAT+1 / -0EasyExpectation & VarianceProbabilityEngineering Mathematics

Engineering Mathematics → Probability → Expectation & Variance

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Question

Passengers try repeatedly to get a seat reservation in any train running between two stations until they are successful. If there is 40%40\% chance of getting reservation in any attempt by a passenger, then the average number of attempts that passengers need to make to get a seat reserved is ___________
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