Answer :

S (Sample Size) = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10,

11, 12, 13, 14, 15, 16, 17, 18, 19, 20,


21, 22, 23, 24, 25, 26, 27, 28, 29, 30,


31, 32, 33, 34, 35, 36, 37, 38, 39, 40,


41, 42, 43, 44, 45, 46, 47, 48, 49, 50,


51, 52, 53, 54, 55, 56, 57, 58, 59, 60,


61, 62, 63, 64, 65, 66, 67, 68, 69, 70,


71, 72, 73, 74, 75, 76, 77, 78, 79, 80,


81, 82, 83, 84, 85, 86, 87, 88, 89, 90,}


Total number of elementary events = 90


(i) Total no. of 2digit numbers = 81


Total number of favorable events = 81





Hence, probability of a two-digit number is .


(ii) Perfect squares = {1, 4, 9, 16, 25, 36, 49, 64, 81}


Total no. of perfect squares = 9


Total number of favourable events = 9





Hence, probability of a perfect square is .


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

A child has a dieRS Aggarwal - Mathematics