Math, asked by saurav11292, 1 year ago


A sortie of 20 aeroplanes is sent on an operational flight. The chances that an aeroplane fails to return is 5%. Find
the probability that (i) one plane does not return (ii) at the most 5 planes do not return, and (iii) what is the most
probable number of returns ?

Answers

Answered by amitnrw
13

Answer:

One plane does not return = (1/20)(19/20)¹⁹

the most  probable number of returns  = 19

Step-by-step explanation:

probability of aerplane not returning = 5% = 5/100 = 1/20

Probability aeroplane returns = 1 - 1/20 = 19/20

One plane does not return means

other 19 planes returns

(1/20)(19/20)¹⁹

the most  probable number of returns  = (19/20) * 20 = 19

Answered by trillionzimbacod
0

Answer:

Step-by-step explanation:

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