Advertisements
Advertisements
Question
Gopi buys a fish from a shop for his aquarium. The shopkeeper takes out one fish at random from a tank containing 5 male fish and 8 female fish (see Figure). What is the probability that the fish taken out is a male fish?
Solution
Total number of fishes in a tank
Number of female fishes = 8
Number of male fishes = 5 + 8 = 13
∴ Total number of outcome = 13
For a male fish
Number of favourable outcomes = 5
Probability of getting a male fish = `"Number of favourable outcomes"/"total Number of outcomes"`
= `5/13`
APPEARS IN
RELATED QUESTIONS
Why is tossing a coin considered to be a fair way of deciding which team should get the ball at the beginning of a football game?
Which of the following arguments are correct and which are not correct? Give a reason for your answer.
If a die is thrown, there are two possible outcomes, an odd number or an even number. Therefore, the probability of getting an odd number is 1/2.
In a simultaneous throw of a pair of dice, find the probability of getting a sum greater than 9
If the probability of winning a game is 0.3, what is the probability of losing it?
A bag contains cards which are numbered from 2 to 90. A card is drawn at random from the bag. Find the probability that it bears a two digit number
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?
A bag contains 5 red, 8 white and 7 black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is neither white nor black.
Fill in blank:
Sum of the probabilities of each outcome m an experiment is ..........
From a deck of 52 cards, all the face cards are removed and then the remaining cards are shuffled. Now one card is drawn from the remaining deck. Find the probability that the card drawn is a king of black color.
A circle with diameter 20 cm is drawn somewhere on a rectangular piece of paper with length 40 cm and width 30 cm. This paper is kept horizontal on table top and a dice, very small in size, is dropped on the rectangular paper without seeing towards it. If the dice falls and lands on the paper only, find the probability that it will fall and land outside the circle.
Cards marked with numbers 1, 3, 5, ..., 101 are placed in a bag and mixed thoroughly. A card is drawn at random from the bag. Find the probability that the number on the drawn card is less than 19.
A die is thrown 450 times and frequencies of the outcomes 1,2,3,4,5,6 were noted as given in the following table
| outcomes | 1 | 2 | 3 | 4 | 5 | 6 |
| Frequency | 73 | 70 | 74 | 75 | 80 | 78 |
(ii) a number < 4
A coin is tossed 100 times with the following frequency:
Head = 55, Tail = 45.
Find the probability of getting head.
What is the probability of not picking a king if you choose randomly from a pack of 52 cards?
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. Determine the probability that the card is a king.
An integer is chosen between 0 and 100. What is the probability that it is divisible by 7?
A jar contains 24 marbles, some are green and others are blue. If a marble is drawn at random from the jar, the probability that it is green is `2/3` Find the number of blue balls in the jar.
Two dice are thrown at the same time. What is the probability that the sum of the two numbers appearing on the top of the dice is less than or equal to 12?
A bag contains 5 pink, 8 blue and 7 yellow balls. One ball is drawn at random from the bag. What is the probability of getting neither a blue nor a pink ball?
A card is drawn at random from a well shuffled deck of 52 playing cards. The probability of getting a face card is ______.
