Advertisements
Advertisements
प्रश्न
A box contains pairs of socks of two colours (black and white). I have picked out a white sock. I pick out one more with my eyes closed. What is the probability that it will make a pair?
Advertisements
उत्तर
It can be observed that while closing the eyes, one can draw either a black sock or a white sock. Therefore, there are two possible cases.
Probability = `"Number of favourable outcome"/"Number of possible outcomes"`
Probability (a pair of white socks will be formed) = `1/2`
संबंधित प्रश्न
Numbers 1 to 10 are written on ten separate slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of.
- Getting a number 6?
- Getting a number less than 6?
- Getting a number greater than 6?
- Getting a 1-digit number?
Tell whether the given is certain to happen, impossible, can happen but not certain.
You are older today than yesterday.
There are 6 marbles in a box with numbers from 1 to 6 marked on each of them.
What is the probability of drawing a marble with number 2?
In a simultaneou throw of a pair of dice, find the probability of getting:
a doublet of odd numbers
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
other than an ace
A bag contains 3 red balls, 5 black balls and 4 white balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is:
black?
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:
red
When two dice are rolled:
List the outcomes for the event that total is less than 5.
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?
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
