Question

one is asked to say a two digit number what is the probability of (a) The first digit being smaller (b) first digit being larger​

Answer 1

Answer:

Total number of two -digit numbers = 90

Step-by-step explanation:

Total number of two -digit numbers = 90

i. Probability of both digits being the same

1. Total number of numbers having same digit = 9

Probability of both digits being same

= 1/90

=1/10

= 0.10

. Probability of first digit being larger

Total number of numbers having first digit larger = 45

10, 20, 21, 30, 31, 32, 40, 41, 42, 43, 50, 51, 52, 53, 54, 60, 61, 62, 63, 64, 65, 70, 71, 72, 73, 74, 75, 76, 80, 81, 82, 83, 84, 85, 86, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98.

Probability of first digit being larger

45/19

=1/2

= 0.50