Advertisements
Advertisements
Question
It is known that a box of 200 electric bulbs contains 16 defective bulbs. One bulb is taken out at random from the box. What is the probability that the bulb drawn is defective.
Solution
Total number of possible outcomes = 200
Number of defective bulbs = 16
∴ P(getting a defective bulb) =`16/200 =2/25`
APPEARS IN
RELATED QUESTIONS
Two digit numbers are formed using the digits 0, 1, 2, 3, 4, 5 where digits are not repeated.
P is the event that the number so formed is even.
Q is the event that the number so formed is greater than 50.
R is the event that the number so formed is divisible by 3.
Then write the sample space S and events P, Q, R using set notation.
All the black face cards are removed from a pack of 52 playing cards. The remaining cards are well shuffled and then a card is drawn at random. Find the probability of getting a:
(i) face card
(ii) red card
(iii) black card
(iv) king
A bag contains cards numbered from 1 to 49. A card is drawn from the bag at random, after mixing the card thoroughly. Find the probability that the number on the drawn card is an even prime number
A die is thrown once. What is the probability of getting a number greater than 4?
In Q. No. 1, The probability that the digit is even is
A number is selected from numbers 1 to 25. The probability that it is prime is
A box contains 90 discs, numbered from 1 to 90. If one disc is drawn at random from the box, the probability that it bears a prime number less than 23, is ______.
Two different coins are tossed simultaneously. The probability of getting at least one head is
If a number x is chosen from the numbers 1, 2, 3, and a number y is selected from the numbers 1, 4, 9. Then, P(xy < 9)
If a die is rolled, what is the probability that number appearing on upper face is less than 2?
In a lottery there are 10 prizes and 25 blanks. What is the probability of getting a prize?
A carton consists of 100 shirts of which 88 are good and 8 have minor defects. Rohit, a trader, will only accept the shirts which are good. But Kamal, an another trader, will only reject the shirts which have major defects. One shirt is drawn at random from the carton. What is the probability that it is acceptable to Kamal?
Once card is drawn at random from a well-shuffled deck of 52 cards. What is the probability of getting a black face card?
A box contains a certain number of balls. Some of these balls are marked A, some are marked B and the remaining are marked C. When a ball is drawn at random from the box P(A) = `1/3` and P(B) = `1/4`. If there are 40 balls in the box which are marked C, find the number of balls in the box.
In a certain race there are three boys A, B, C. The winning probability of A is twice than B and the winning probability of B is twice than C. If P(A) + P(B) + P(C) = 1, then find the probabilities of their winning.
A coin is tossed twice. Find the probability of getting: exactly one tail
Two dice are thrown at the same time. Find the probability that the sum of the two numbers appearing on the top of the dice is: 0
A man is known to speak the truth 3 out of 4 times. He throws a die and a number other than six comes up. Find the probability that he reports it is a six.
The probability that a non leap year selected at random will contain 53 sundays is ______.
Sonia picks up a card from the given cards.
Calculate the probability of getting a Y card
