Advertisements
Advertisements
Question
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 Rohit.
Solution
Total number of shirts = 100.
Number of good shirts = 88.
Number of shirts with minor defects = 8.
Number of shirts with major defects = 100 − 88 − 8 = 4.
P(the drawn shirt is acceptable to Rohit) = `("Number of favourable outcomes")/"Number of all possible outcomes"`
`= 88/100 = 22/25`
Thus, the probability that the drawn shirt is acceptable to Rohit is `22/25` .
APPEARS IN
RELATED QUESTIONS
In a school, students decided to plant trees in and around the school to reduce air pollution. It was decided that the number of trees, that each section of each class will plant, will be double of the class in which they are studying. If there are 1to 12 classes in the school and each class has two sections, find how many trees were
planted by the students. Which value is shown in this question?
Two dice are thrown. Find the probability of getting :
1) The sum of the numbers on their upper faces is at least 9.
2) The sum of the numbers on their upper faces is 15.
3) The number on the upper face of the second die is greater than the number on the upper face of the first die.
Cards numbered from 11 to 60 are kept in a box. If a card is drawn at random from the box, find the probability that the number on the drawn card is a perfect square number.
Cards numbered from 11 to 60 are kept in a box. If a card is drawn at random from the box, find the probability that the number on the drawn card is divisible by 5
The following table shows the blood-groups of employees in a bank.
Event C is : ‘the blood-group of an employee is AB.’
Blood - group | A | B | AB | 0 |
No. of employees | 20 | 40 | 15 | 25 |
If an employee is chosen at random, what is the probability that his blood-group is AB ?
Fill in the following boxes and find the answer
n(S)= ______
n(C)= ______
p(C)=________=_________
Cards numbered 1 to 30 are put in a bag. A card is drawn at random from this bag. Find the probability that the number on the drawn card is a prime number greater than 7
The king, queen and jack of clubs are removed form a deck of 52 playing cards and the remaining cards are shuffled. A card is drawn from the remaining cards. Find the probability of getting a card of a queen of diamond.
If a two digit number is chosen at random, then the probability that the number chosen is a multiple of 3, is
A card is drawn from a well-shuffled pack of 52 cards. Find the probability of getting a red face card.
A game of chance consists of spinning an arrow which is equally likely to come to rest pointing to one of the numbers 1, 2, 3,..., 12 as shown in the figure. What is the probability that it will point to 6 ?
A box contains 80 discs, which are numbered from 1 to 80. If one disc is drawn at random from the box, find the probability that it bears a perfect square number.
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 card is drawn at random from a pack of 52 playing cards. Find the probability of drawing a card that is neither a spade nor a king.
Two coins are tossed together. Find the probability of getting: at most one head:
A die is thrown once. Find the probability of getting:
a number greater than 6.
In a football match, a goalkeeper of a team can stop the goal, 32 times out of 40 attempts tried by a team. Find the probability that the opponent team can convert the attempt into a goal
I toss three coins together. The possible outcomes are no heads, 1 head, 2 heads and 3 heads. So, I say that probability of no heads is `1/4`. What is wrong with this conclusion?
Each outcome or a collection of outcomes in an experiment makes an ______.
A bag contains 25 cards, numbered through 1 to 25. A card is drawn at random. What is the probability that the number on the card drawn is a prime number?
Three coins are tossed simultaneously. What is the probability of getting at most one tail?