Advertisements
Advertisements
प्रश्न
One card is randomly drawn from a pack of 52 cards. Find the probability that: the drawn card is red or king.
उत्तर
In randomly drawing a card from 52 cards.
n(S) = 52
Let D denote the event that the drawn card is red or a king.
n(D) = 26 (red cards ) + 2(kings)
n(D) = 28
P(D) = `"n(D)"/"n(S)" = 28/52 = 7/13`
APPEARS IN
संबंधित प्रश्न
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
(i) red?
1800 families with 2 children were selected randomly and the following data were recorded:
| No. of girls in a family | 2 | 1 | 0 |
| No. of families | 700 | 850 | 250 |
Computer the probability of a family chosen at random having: 2 girls
1800 families with 2 children were selected randomly and the following data were recorded:
| No. of girls in a family | 2 | 1 | 0 |
| No. of families | 700 | 850 | 250 |
Computer the probability of a family chosen at random having: No girls.
One card is randomly drawn from a pack of 52 cards. Find the probability that: the drawn card is an ace.
One card is randomly drawn from a pack of 52 cards. Find the probability that: the drawn card is red and a king.
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.
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 ’10’ of a black suit.
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:
- 5
- Neither by 2 nor by 3
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`
