Advertisements
Advertisements
प्रश्न
What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy?
Advertisements
उत्तर
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
संबंधित प्रश्न
In a simultaneou throw of a pair of dice, find the probability of getting:
a doublet of odd numbers
In a simultaneous throw of a pair of dice, find the probability of getting:
a sum greater than 9
Three coins are tossed together. Find the probability of getting:
exactly two heads
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a black king
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
black and a king
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a ten
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
the ace of spades
In a school only, 3 out of 5 students can participate in a competition. What is the probability of the students who do not make it to the competition?
In throwing a die the number of possible outcomes is ______.
Classify the following events:
Today moon will not revolve around the earth.
