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Question Number 24490 by FilupES last updated on 19/Nov/17

$$\mathrm{I}\mathrm{hold}\mathrm{my}\mathrm{hand}\mathrm{behind}\mathrm{my}\mathrm{back},\mathrm{and}\mathrm{secretly}$$$$\mathrm{hold}\mathrm{up}n\mathrm{fingers}(0⩽n⩽5).$$$$$$$$\mathrm{I}\mathrm{then}\mathrm{as}\mathrm{you},\mathrm{am}\mathrm{I}\mathrm{holding}\mathrm{up}k\mathrm{fingers}?$$$$\mathrm{Where}k\mathrm{is}\mathrm{also}\mathrm{a}\mathrm{random}\mathrm{number}0⩽k⩽5.$$$$$$$$\mathrm{You}\mathrm{randomly}\mathrm{guess}\mathrm{Yes}\mathrm{or}\mathrm{No}.$$$$\mathrm{What}\mathrm{is}\mathrm{the}\mathrm{probability}\mathrm{you}\mathrm{guess}\mathrm{correctly}?$$

Commented by prakash jain last updated on 20/Nov/17

$$1/6?$$

Commented by FilupES last updated on 20/Nov/17

$$\mathrm{I}\mathrm{honestly}{\mathrm{don}}^{\prime }\mathrm{t}\mathrm{know}.$$$$$$$$\mathrm{The}\mathrm{question}\mathrm{has}\mathrm{been}\mathrm{bugging}\mathrm{me}.$$

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