Question

1. One is asked to say a two digit number
a) How many two digit numbers are there ?
b) What is the probability of one of the digit being 1 ?
c) What is the probability of the product of the digits being a prime number?​

Answer 1

a) there are total 89 two digit numbers

b ) 9/89

Answer 2

Answer:

(a) 90 two digit number are there.

(b) possible outcomes =90

favorable outcomes =10(10,11,12,13,14,15,16,17,18,19)

p(one of the digit being 1)=10/90=1/9.

(c)