Advertisements
Advertisements
Question
What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy?
Advertisements
Solution
Given, total children = 7 = 4 boys and 3 girls.
So, favourable outcomes for a day = 4
Total number of possible outcomes = 7
∴ Probability = `"Favourable outcomes"/"Total number of possible outcomes" = 4/7`
APPEARS IN
RELATED QUESTIONS
A coin is flipped to decide which team starts the game. What is the probability that your team will start?
In a simultaneous throw of a pair of dice, find the probability of getting:
a doublet of prime number
In a simultaneou throw of a pair of dice, find the probability of getting:
an even number on first
In a simultaneous throw of a pair of dice, find the probability of getting:
a number other than 5 on any dice.
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
neither a red card nor a queen.
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
the seven of clubs
A bag contains 4 red, 5 black and 6 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is:
white
What is the probability of choosing a vowel from the alphabets?
A coin is tossed 15 times and the outcomes are recorded as follows:
H T T H T H H H T T H T H T T. The chance of occurrence of a head is 50 per cent.
The probability of getting an ace out of a deck of cards is greater than 1.
