Question: Ping A computer sends a periodical ping to a server, and the server is available 90%. Assuming each ping trial is independent from the others,

Ping A computer sends a periodical ping to a server, and the server is available 90%. Assuming each ping trial is independent from the others, find the probability that, on any particular day,

a) the computer finds the server unavailable on its fourth ping.

b) the computer finds the server available on its third ping.

c) it takes the computer more than two pings to find the server available.

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