Question

One asked a twodigit number what is the probability that first digit is being smaller

Answer 1

Answer:

The probability is 2/5.

Step-by-step explanation:

Let S be the sample space

S={10,11,12,13......99}

Event A is the event in which the probability of getting the number with first digit being smaller.

A={12,13,14,15,16,17,18,19,23,24,25,26,27,28,29,34,35,36,37,38,39,45,46,47,48,49,56,57,58,59,67,68,69,78,79,89}

p(A)= n(a)/n(S)= 36/90= 2/5

The probability of Event A is 2/5.