Advertisements
Advertisements
प्रश्न
A game consists of spinning an arrow which comes to rest pointing at one of the regions (1, 2 or 3) (figure). Are the outcomes 1, 2 and 3 equally likely to occur? Give reasons.
उत्तर
No, the outcomes are not equally likely, because 3 contains half part of the total region, so it is more likely than 1 and 2, since 1 and 2, each contains half part of the remaining part of the region.
APPEARS IN
संबंधित प्रश्न
A die is thrown. Find the probability of getting:
an even prime number
Three coins are tossed together. Find the probability of getting at least one head and one tail
An urn contains 10 red and 8 white balls. One ball is drawn at random. Find the probability
that the ball drawn is white.
A bag contains 5 black, 7 red and 3 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is Red
Two customers are visiting a particular shop in the same week (Monday to Saturday). Each is equally likely to visit the shop on any one day as on another. What is the probability that both will visit the shop on consecutive days?
4 defective pens are accidentally mixed with 16 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen is drawn at random from the lot. What is the probability that the pen is defective?
Six faces of a die are as shown below.
If the die is rolled once, find the probability of - ‘A’ appears on upper face.
1000 families with 2 children were selected randomly , and the following data were recorded :
| Number of girls in a family | 0 | 1 | 2 |
| Number of families | 333 | 392 | 275 |
Find the probability of a family , having
(iii) no girl
Two dice are thrown simultaneously. Find the probability of getting: a multiple of 3 as the sum.
The percentages of marks obtained by a student in six unit tests are given below:
| Unit test | 1 | 2 | 3 | 4 | 5 | 6 |
| Percentage of marks obtained |
53 | 72 | 95 | 46 | 67 | 59 |
A unit test is selected at random. What is the probability that the student gets more than 60% marks in the test?
