Advertisements
Advertisements
प्रश्न
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?
उत्तर
Total no. of possible outcomes = 18 {6 red, 8 black, 4 white}
Let E ⟶ event of drawing black ball.
No. of favourable outcomes = 8 {8 black balls}
Probability, P(E) =`"no.of favorable outcomes"/"Total no.of possible outcomes"` =8/18 =4/9
`barE`⟶ event of not drawing black ball
𝑃`(barE)` = 1 − 𝑃(𝐸)
= 1 − (4/9) =5/9
APPEARS IN
संबंधित प्रश्न
If S = {2, 4, 6, 8, 10, 12} and A = {4, 8, 12}, find A'
A die is thrown once. Find the probability of getting a number lying between 2 and 6.
Three coins are tossed together. Find the probability of getting no tails
An urn contains 10 red and 8 white balls. One ball is drawn at random. Find the probability
that the ball drawn is white.
There are 30 cards, of same size, in a bag on which numbers 1 to 30 are written. One card is taken out of the bag at random. Find the probability that the number on the selected card is not divisible by 3.
From a pack of 52 playing cards, all cards whose numbers are multiples of 3 are removed. A card is now drawn at random. What is the probability that the card drawn is an even numbered red card?
A two digit number is to be formed from the digits 0, 1, 2, 3, 4. Repetition of the digits is allowed. Find the probability that the number so formed is a - multiple of 4.
A card is drawn from a pack of well-shuffled 52 playing cards. Find the probability that the card is drawn is a face card.
What is the probability of not picking a face card when you draw a card at random from a pack of 52 cards?
A letter of English alphabets is chosen at random. What is the probability that it is a letter of the word ‘MATHEMATICS’?
