Question

There are 90 students in a lunch period, and 5 of them will be selected at random for deaning duty every week.

Answer 1

The probability of choosing any 5 students will be 5% so for all the options the probability will be same.

What is probability?

Probability is the extent to which an event is likely to occur, measured by the ratio of the favourable cases to the whole number of cases possible.

Here total samples are [90]

favorable outcomes should be [5]

So the probability to select 5 random students from 90 will be

$P=\dfrac{5}{90}=0.05=0.05\times 100=5\%$

Hence the probability of choosing any 5 students will be 5% so for all the options the probability will be same.

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