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In a wireless channel, the probability of a successful packet transmission is 0.3. A stop and wait ARQ protocol is deployed to transfer data across the link. What is the average number of transmission attempts required to transfer 840 packets?

with soln with detail produre if possible please
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Let n be the number of packets

Total transmission= n + np + np² + ....…

By applying gp formula

n(1/1-p)

Putting values n=840 and p = 0.3

Ans= 1200
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