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Impossible Event

A dice is tos...

Question

A dice is tossed 80 times and number 5 is obtained 14 times. The probability of not getting the number 5 is

(a) $\frac{7}{40}$ (b) $\frac{7}{80}$ (c) $\frac{33}{40}$ (d) None of these

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Solution

Probability of getting 5 = $\frac{14}{80} = \frac{7}{40}$
Therefore
Probability of not getting 5 = $1 - \frac{7}{40} = \frac{33}{40}$
Hence, the correct option is (c).

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