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प्रश्न
The sum of the probabilities of all the elementary events of an experiment is _________.
उत्तर
The sum of the probabilities of all the elementary events of an experiment is 1.
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संबंधित प्रश्न
Which of the following cannot be the probability of an event?
A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, determine the number of blue balls in the bag
In a simultaneous throw of a pair of dice, find the probability of getting a doublet of odd numbers
A card is drawn at random from a pack of 52 cards. Find the probability that card drawn is a heart
In a lottery there are 10 prizes and 25 blanks. What is the probability of getting a prize?
A black die and a white die are thrown at the same time. Write all the possible outcomes. What is the probability that the sum of the two numbers appearing on the top of the dice is 13?
Five cards—ten, jack, queen, king, and an ace of diamonds are shuffled face downwards.One card is picked at random If a king is drawn first and put aside, what is the probability that the second card picked up is the ace?
A game of chance consists of spinning an arrow which is equally likely to come to rest
pointing to one of the number, 1, 2, 3, ..., 12 as shown in Fig. below. What is the
probability that it will point to a number which is multiple of 3?
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 robability that both will visit the shop on the same day?
What is the probability that a number selected at random from the number 1,2,2,3,3,3, 4, 4, 4, 4 will be their average?
Find the probability that a number selected at random from the numbers 1, 2, 3, ..., 35 is a Prime number
Two dice are thrown simultaneously. What is the probability that 5 will not come up on either of them?
From a well-shuffled deck of 52 playing-cards, one card is drawn. Find the probability that the card drawn will be a face card of red colour.
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.
There are six cards in a box, each bearing a number from 0 to 5. Find the probability of the following event, that a card drawn show, a natural number.
There are six cards in a box, each bearing a number from 0 to 5. Find the probability of the following event, that a card drawn show, a number is greater than 5.
Fill in the blank:
For any event E, P(E) + P (not E) = ........ .
A card is drawn at random from a well-shuffled deck of 52 cards. What is the probability of getting a black king?
A coin is tossed 100 times with the following frequency:
Head = 55, Tail = 45.
Find the probability of getting head.
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?
