Advertisements
Advertisements
प्रश्न
There is a square board of side ‘2a’ units circumscribing a red circle. Jayadev is asked to keep a dot on the above said board. The probability that he keeps the dot on the shaded region is ______.
पर्याय
`π/4`
`(4 - π)/4`
`(π - 4)/4`
`4/π`
उत्तर
There is a square board of side ‘2a’ units circumscribing a red circle. Jayadev is asked to keep a dot on the above said board. The probability that he keeps the dot on the shaded region is `underlinebb((4 - π)/4)`.
APPEARS IN
संबंधित प्रश्न
A bag contains lemon flavoured candies only. Malini takes out one candy without looking into the bag. What is the probability that she takes out an orange flavoured candy?
A die is thrown once. Find the probability of getting an odd number.
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?
A box contains 100 red cards, 200 yellow cards and 50 blue cards. If a card is drawn at random from the box, then find the probability that it will be (i) a blue card (ii) not a yellow card (iii) neither yellow nor a blue card.
There are six cards in a box, each bearing a number from 0 to 5. Find the probability of the following event, that a card drawn show, number less than 1.
Fill in the blank:
The probability of a sure event is ........ .
1000 families with 2 children were selected randomly , and the following data were recorded :
| Number of girls in a family | 0 | 1 | 2 |
| Number of families | 333 | 392 | 275 |
Find the probability of a family , having
(iii) no girl
The probability of getting a bad egg in a lot of 400 is 0.035. The number of bad eggs in the lot is ______.
The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well shuffled. Now one card is drawn at random from the remaining cards. Determine the probability that the card is a heart.
In a game, the entry fee is Rs 5. The game consists of a tossing a coin 3 times. If one or two heads show, Sweta gets her entry fee back. If she throws 3 heads, she receives double the entry fees. Otherwise she will lose. For tossing a coin three times, find the probability that she gets double entry fee.
