Advertisements
Advertisements
Question
Fill in the blank:
The probability of an impossible event is ....... .
Solution
The probability of an impossible event is 0 .
APPEARS IN
RELATED QUESTIONS
A card is drawn at random from a pack of 52 cards. Find the probability that card drawn is a jack, queen or a king
What is the probability that a number selected from the numbers 1, 2, 3, ..., 15 is a multiple
of 4?
Two dice are thrown simultaneously. What is the probability that 5 will not come up on either of them?
Two dice (each bearing numbers 1 to 6) are rolled together. Find the probability that the sum of the numbers on the upper-most faces of two dice is less than 6.
A card is drawn at random from a well-shuffled pack of 52 cards. Find the probability of getting
(i) a red king.
(ii) a queen or a jack.
A bag contains 3 red, 3 white and 3 green balls. One ball is taken out of the bag at random. What is the probability that the ball drawn is – either red or white.
Fill in the blank:
For any event E, P(E) + P (not E) = ........ .
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
(ii) 2 girls
Sushma tosses a coin 3 times and gets tail each time. Do you think that the outcome of next toss will be a tail? Give reasons.
A bag contains 6 red, 4 black and some white balls:
- Find the number of white balls in the bag if the probability of drawing a white ball is `1/3`.
- How many red balls should be removed from the bag for the probability of drawing a white ball to be `1/2`?
