Question

three numbers are choosen from 1 to 20 the probability that they are consecutive is​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

S={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,1920}

n(S)= 20

Let event A= consecutive number

A={ 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}

n (A)= 20

P(A)= n(A)/n(S)

=20/20

P(A)=1