Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A fair n (n > 1) faces die is rolled repeatedly until a number less than n appears. If the mean of the number of tosses required is 
, then n is equal to
Text Solution
Verified by ExpertsThe correct answer is:
10
(10)
Given,
A fair n (n > 1) faces die is rolled repeatedly until a number less than n appears,
Now we know that, mean is given by,
Mean 
….
Where, 
…
…. ….
Now subtracting equation - we get,
Now putting the value of S in equation we get,
n = 10
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