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Quick Probability Question
Can someone help settle a bet we have here at work?
A cell phone number contains eleven digits. One recent ESN came up as 05101555151. Excluding the exact order and the fact that some digits recur more than others, what is the P that an ESN will contain only three specific digits? My very unqualified opinion is that the solution would have something to do with (10!)/(3!). Is that correct? Please respond to xscott.raymond@xverizonwireless.com (remove x'es). |
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