An ordinary fair die is thrown until a 6 is obtained. Find the probability that obtaining a 6 takes more than 8 throws. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................

Mathematics

IGCSE&ALevel

CAIE

Exam No：9709_w20_qp_53 Year：2020 Question No：2(a)

Answer:

\(\left(\frac{5}{6}\right)^{8}\)
\(0.233\)

Knowledge points:

5.4.2 use formulae for probabilities for the binomial and geometric distributions, and recognise practical situations where these distributions are suitable models (Including the notations B(n,p) and Geo(p). Geo(p) denotes the distribution in which for r = 1,2,3,...)

Answer:

Knowledge points:

Solution:

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