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प्रश्न
Fill in the blank:
The probability of a sure event is ........ .
उत्तर
The probability of a sure event is 1.
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संबंधित प्रश्न
Following experiment have equally likely outcomes? Explain.
A driver attempts to start a car. The car starts or does not start.
In a class, there are 18 girls and 16 boys. The class teacher wants to choose one pupil for class monitor. What she does, she writes the name of each pupil on a card and puts them into a basket and mixes thoroughly. A child is asked to pick one card from the basket. What is the probability that the name written on the card is the name of a boy?
Fill in blank:
Probability of an impossible event is...........
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two-digit number, (ii) a number divisible by 5 ?
A coin is tossed 100 times with the following frequency:
Head = 55, Tail = 45.
Find the probability of getting head.
One card is drawn from a well-shuffled deck of 52 cards. The probability of getting a king of red colour is ____________.
The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well shuffled. Now one card is drawn at random from the remaining cards. What is the probability that the card is a club?
In a game, the entry fee is Rs 5. The game consists of a tossing a coin 3 times. If one or two heads show, Sweta gets her entry fee back. If she throws 3 heads, she receives double the entry fees. Otherwise she will lose. For tossing a coin three times, find the probability that she gets double entry fee.
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`?
In a TV show, a contestant opts for video call a friend life line to get an answer from three of his friends, named Amar, Akbar and Anthony. The question which he asks from one of his friends has four options.
Find the probability that:
- Akbar is chosen for the call.
- Akbar couldn't give the correct answer.
