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
Find the probability of the pointer stopping on D.
Tell whether the given is certain to happen, impossible, can happen but not certain.
Tomorrow will be a cloudy day.
A die is thrown. Find the probability of getting:
a prime number
In a simultaneous throw of a pair of dice, find the probability of getting:
a sum less than 7
Three coins are tossed together. Find the probability of getting:
at least one head and one tail
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:
a jack, queen or a king
A bag contains 6 red, 8 black and 4 white balls. A ball is drawn at random. What is the probability that ball drawn is not black?
If a die is thrown, the probability of getting a number greater than 6 is 1.
Following cards are put facing down:
\[\boxed{\text{A}}\] \[\boxed{\text{E}}\] \[\boxed{\text{I}}\] \[\boxed{\text{O}}\] \[\boxed{\text{U}}\]
What is the chance of drawing out
- a vowel
- a card marked U
- A or I
- a consonant
