Question 1201360
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A box contains 300 discs of different colours. 
There are 100 pink discs, 100 blue discs and 100 orange discs. 
The discs of each colour are numbered from 0 to 99. 
Five discs are selected at random, one at a time, with replacement. Find
(i) the probability that no orange discs are selected
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<pre>
The fact that the experiment is repeated with replacement means that every time 
the initial conditions remain the same.


Therefore, in each selection of every of 5 discs, the probability that 
no orange discs are selected is  {{{200/300}}} = {{{2/3}}}.


Therefore, the probability that no orange discs are selected in all 5 selections is

    {{{(2/3)^2}}} = {{{2^5/3^5}}} = {{{32/243}}} = 0.131687243,  or  0.1317 (rounded).    <U>ANSWER</U>
</pre>

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