Advertisements
Advertisements
प्रश्न
A box contains loo red cards, 200 yellow cards and 50 blue cards. If a card is drawn at random from the box, then find the probability that it will be neither yellow nor a blue card.
उत्तर
Total no. of possible outcomes = 100 + 200 + 50 = 350 {100 red, 200 yellow & 50 blue}
E ⟶ getting neither yellow nor a blue card
No. of favourable outcomes = 350 – 200 – 50 = 100 {removing 200 yellow & 50
blue cards}
Probability =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
P(E) = 100/350 = 2/7
APPEARS IN
संबंधित प्रश्न
A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probability that the marble taken out will be (i) red? (ii) white? (iii) not green?
If S = {2, 4, 6, 8, 10, 12} and A = {4, 8, 12}, find A'
A bag contains 5 black, 7 red and 3 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is black or white
A game of chance consists of spinning an arrow which is equally likely to come to rest
pointing to one of the number, 1, 2, 3, ..., 12 as shown in Fig. below. What is the
probability that it will point to a number which is multiple of 3?
A lot consists of 144 ball pens, of which 20 are defective and the others are good. Nuri will buy a pen if it is good, but will not buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that she will not buy it?
A die is rolled twice. Find the probability that 5 will come up both the times.
A number is selected at random from the numbers 1 to 30. What is the probability that the selected number is a prime number?
One card is drawn from a well-shuffled deck of 52 cards. The probability of getting a king of red colour is ____________.
An unbiased die is thrown. The probability of getting an odd prime number is ______.
The following letters A, D, M, N, O, S, U, Y of the English alphabet are written on separate cards and put in a box. The cards are well shuffled and one card is drawn at random. What is the probability that the card drawn is a letter of the word,
- MONDAY?
- Which does not appear in MONDAY?
- Which appears both in SUNDAY and MONDAY?
