Advertisements
Advertisements
प्रश्न
One card is drawn from a well-shuffled deck of 52 cards. Find the probability of getting the jack or the queen of the hearts.
उत्तर
Total possible outcomes = 52
Favorable outcomes for jack or queen of hearts = 1 jack + 1 queen
Number of favorable outcomes = 2
P(jack or queen of hearts) = `2/52 = 1/26`
APPEARS IN
संबंधित प्रश्न
A bag contains 5 white balls, 6 red balls and 9 green balls. A ball is drawn at random from the bag. Find the probability that the ball drawn is
- a green ball.
- a white or a red ball.
- neither a green ball nor a white ball.
Which of the following cannot be the probability of an event?
– 0.6
A bag contains 16 coloured balls. Six are green, 7 are red and 3 are white. A ball is chosen, without looking into the bag. Find the probability that the ball chosen is green or red or white.
A man tosses two different coins (one of Rs 2 and another of Rs 5) simultaneously. What is the probability that he gets at most one head?
Two different coins are tossed simultaneously .Find the probability of getting :
(i)two tails
The heights of 60 students of a class are given in the following table :
Height(in cm) | 150-155 | 155-158 | 158-160 | 160-165 | 165-172 |
No. of students | 8 | 20 | 25 | 4 | 3 |
Find the probability that the height of a student lies in the interval
(i) 155-158
The percentage of marks obtained by a student in monthly unit tests are given below :
Unit Test | l | ll | lll | lV | V | Vl |
Percentage of marks obtained | 72 | 67 | 69 | 74 | 71 | 76 |
Based on this data find the probability that the student gets
(ii) less than 72% marks in a unit test.
A bag contains a red ball , a blue ball and a yellow ball , all the balls being of the same size . Anjali takes out a ball from the bag without looking into it . what is the probability that she takes out .
(ii) red ball?
Two different coins are tossed simultaneously .Find the probability of getting :
(ii)no tail
A girl calculates that the probability of her winning the first prize in a lottery is 0.08. If 6,000 tickets are sold, how many tickets has she bought?