# What is the Probability that a Number Selected at Random from the Number 1,2,2,3,3,3, 4, 4, 4, 4 Will Be Their Average? - Mathematics

What is the probability that a number selected at random from the number 1,2,2,3,3,3, 4, 4, 4, 4 will be their average?

#### Solution

Given no’s are 1, 2, 2, 3, 3, 3, 4, 4, 4, 4

Total no. of possible outcomes = 10

Average of the no’s ="sum of no's"/"total no's"=(1+2+2+3+3+3+4+4+4+4)/10=30/10= 3

E ⟶ event of getting 3

No. of favourable outcomes = 3 {3, 3, 3}

P(E) ="No.of favorable outcomes"/"Total no.of possible outcomes"

P(E) =3/10

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#### APPEARS IN

RD Sharma Class 10 Maths
Chapter 16 Probability
Exercise 16.1 | Q 24 | Page 22