(ii)
In tossing a coin 50 times, we may want the number of heads obtained © NCERT
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MATHEMATICS
(iii)
In the experiment of taking out four articles (one after the other) at random
from a lot of 20 articles in which 6 are defective, we want to know the
number of defectives in the sample of four and not in the particular sequence
of defective and nondefective articles In all of the above experiments, we have a rule which assigns to each outcome of
the experiment a single real number This single real number may vary with different
outcomes of the experiment