Advertisements
Advertisements
प्रश्न
A dice is thrown once. What is the probability that the number is greater than 2?
उत्तर
Event = {number is greater than 2}
Event = {3, 4, 5, 6}
n(E) = 4
P(E) = ?
P(E) = `"n(E)"/"n(S)" = 4/6 = 2/3`.
APPEARS IN
संबंधित प्रश्न
What is the probability that a number selected at random from the number 1,2,2,3,3,3, 4, 4, 4, 4 will be their average?
Five cards, the ten, jack, queen, king, and ace of diamonds, are well-shuffled with their face downwards. One card is then picked up at random.
If the queen is drawn and put aside, what is the probability that the second card picked up is (a) an ace? (b) a queen?
The king, queen and jack of clubs are removed from 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 heart
A circle with diameter 20 cm is drawn somewhere on a rectangular piece of paper with length 40 cm and width 30 cm. This paper is kept horizontal on table top and a dice, very small in size, is dropped on the rectangular paper without seeing towards it. If the dice falls and lands on the paper only, find the probability that it will fall and land outside the circle.
How many possibilities is following?
Any day of a week is to be selected randomly.
Each card bears one letter from the word ‘mathematics’ The cards are placed on a table upside down. Find the probability that a card drawn bears the letter ‘m’.
Two fair dice are rolled simultaneously. The probability that 5 will come up at least once is ______.
If I toss a coin 3 times and get head each time, should I expect a tail to have a higher chance in the 4th toss? Give reason in support of your answer.
Two dice are thrown simultaneously. What is the probability that the sum of the numbers appearing on the dice is a prime number?
All the jacks, queens and kings are removed from a deck of 52 playing cards. The remaining cards are well shuffled and then one card is drawn at random. Giving ace a value 1 similar value for other cards, find the probability that the card has a value greater than 7