Question

The probability that the unit digit of the chosen number is less 4
a) 13/30 b) 17/30 c) 11/30 d) 1/10​

Answer 1

Step-by-step explanation:

S = {0,1,2,3,4,5,6,7,8,9}

n(S) = 10

Event A:

A = {0,1,2,3}

n(A) = 4

Thus,

p(A) = n(A)/n(S)

p(A) = 4/10

p(A) = 2/5

p(A) = 0.4

Now,

13/30 = 0.4

a) 13/30