A fair die is repeatedly rolled until a total of 1380 show up.What is the probability of this needs more than 400 rolls..(adsbygoogle = window.adsbygoogle || []).push({});

I think the number of rolls varies from 1380/6=230 to 1380/1=1380.

So can I use standard normal distribution of 1-P(X<400) and how..

please guide me in this problem

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# Repeatedly rolled fair die

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