Q8 of 25 Page 15

If a number x is chosen from the numbers 1, 2, 3, and a number y is selected from the numbers 1, 4, 9. Then, find P(xy < 9).

Concept Used:


Explanation:


Total numbers of elementary events are: 3 × 3 = 9


Let E be the event of (xy < 9)


Favourable outcomes are: 1 × 1 = 1, 1 × 4 = 4, 2×1 =2, 2×4= 8, 3×1 =3


Numbers of favourable outcomes are: 5


P (xy < 9) = 5/9


More from this chapter

All 25 →
6

Tickets numbered 1 to 20 are mixed up, and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3?

 7

A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag.

What is the probability that the ball drawn is


(i) Red? (ii) Not red?

 9

If two coins are tossed together. Find the probability of:

(i) Getting exactly two heads


(ii) Getting at least one tails

 10

Two unbiased dice are tossed together. Find the probability that the total of the number on the dice is greater than 9.