Advertisements
Advertisements
प्रश्न
A two digit number is to be formed using the digits 0, 1, 2, 3. Repetition of the digits is allowed. Find the probability that a number so formed is a prime number.
उत्तर
Total Outcomes: {10, 12, 13, 11, 20, 21, 22, 23, 30, 31, 32, 33} = 12
Favourable Outcomes: {11, 13, 23, 31} = 4
`P = "Favourable Outcomes"/"Total Outcomes" = 4/12 =1/3`
APPEARS IN
संबंधित प्रश्न
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?
If two different dice are rolled together, the probability of getting an even number on both dice, is:
(A) 1/36
(B) 1/2
(C) 1/6
(D) 1/4
A bag contains 3 red balls and 5 black balls. A ball is draw at random from the bag. What is the probability that the ball drawn is not red?
A dice is rolled twice. Find the probability that 5 will come up exactly one time
In the given figure, a square dart board is shown. The length of a side of the larger square is 1.5 times the length of a side of the smaller square. If a dart is thrown and lands on the larger square. What is the probability that it will land in the interior of the smaller square?
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 a number which is a multiple of 5?
Cards numbered 1 to 30 are put in a bag. A card is drawn at random from the bag. Find the probability that the number on the drawn card is not divisible by 3,
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.
A die is thrown once. The probability of getting an even number is
By using two variables, write the following statement in mathematical form:
The cost of two tables and five chairs is 2,200.
A coin is tossed twice. Find the probability of getting: two tails
Three identical coins are tossed together. What is the probability of obtaining:
all heads?
From 10 identical cards, numbered 1, 2, 3, ……, 10, one card is drawn at random. Find the probability that the number on the card drawn is a multiple of
2 and 3
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: less than or equal to 12
What is the probability of throwing an even number with a single standard dice of six faces?
Frame two problems in calculating probability, based on the spinner shown here.
On throwing a dice once, the probability of occurence of an even number is `1/2`.
The probability of getting a prime number is the same as that of a composite number in a throw of a dice.
Playing cards from a pack of cards the following cards are kept face down:
Suhail wins if he picks up a face card. Find the probability of Suhail winning?
Three coins are tossed simultaneously. What is the probability of getting at most one tail?
