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प्रश्न
One card is drawn from a pack of 52 cards, each of the 52 cards being equally likely to be drawn. Find the probability that the card is drawn is red.
उत्तर
n(S) = 52
Event = {Red Cards}
n(E) = 26
P(E) = ?
∴ P(E) = `"n(E)"/"n(S)" = 26/52 = 1/2`.
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संबंधित प्रश्न
Ramesh chooses a date at random in January for a party.
| January | |||||
| Mon | 6 | 13 | 20 | 27 | |
| Tue | 7 | 14 | 21 | 28 | |
| Wed | 1 | 8 | 15 | 22 | 29 |
| Thurs | 2 | 9 | 16 | 23 | 30 |
| Fri | 3 | 10 | 17 | 24 | 31 |
| Sat | 4 | 11 | 18 | 25 | |
| Sun | 5 | 12 | 19 | 26 | |
Find the probability that he chooses:
- a Wednesday
- a Friday
- a Tuesday or a Saturday.
A box contains 5 red marbles, 8 white marbles and 4 grem marbles. One marble is taken out of the box at randam.
What is the probability that the marble taken out wil be
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In a set of 25 cards, each card bears only one number from 1 to 25. One card is drawn randomly. Write the sample space for this random experiment
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A box contains tokens numbered 5 to 16. A token is drawn at random. Find the probability that the token drawn bears a number divisible by:
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Fill in the boxes:
Sunita choose a card from a well-shuffled deck of 52 cards.
Total number of cards, S = `square`
Let E be the event that the choosen card is a queen.
Number of queens = `square`
Thus, P(E) = `"Number of queens"/"Total number of cards" = square/square = square`
Fill in the boxes:
Sunita choose a card from a well-shuffled deck of 52 cards.
Let F be the event that the choosen card is an eight of the spade.
Number of the eight of the spade = `square`
Thus, P(F) = `square/square`
= `square/square`
