Advertisements
Advertisements
प्रश्न
Ritwik draws a ball from a bag that contains white and yellow balls. The probability of choosing a white ball is `2/9`. If the total number of balls in the bag is 36, find the number of yellow balls.
उत्तर
The probability of choosing a white ball = `2/9`
Then, the probability of choosing a yellow ball = `1 - 2/9`
= `(9 - 2)/9`
= `7/9`
Given, total number of balls in the bag = 36
∴ Number of yellow balls = `7/9 xx 36` = 28
APPEARS IN
संबंधित प्रश्न
In below Fig., points A, B, C and D are the centers of four circles that each have a radius of length one unit. If a point is selected at random from the interior of square ABCD. What is the probability that the point will be chosen from the shaded region?
A bag contains cards numbered from 1 to 25. A card is drawn at random from the bag. The probability that the number on this card is divisible by both 2 and 3 is
(A)`1/5`
(B)`3/25`
(C)`4/25`
(D)`2/25`
All jacks, queens and kings are removed from a pack of 52 cards. The remaining cards are well-shuffled and then a card is randomly drawn from it. Find the probability that this card is a red card.
A month is selected at random in a year. The probability that it is March or October, is
A bag contains 4 white balls, 5 red balls, 2 black balls and 4 green balls. A ball is drawn at random from the bag. Find the probability that it is neither red nor green.
Two different dice are rolled simultaneously. Find the probability that the sum of the numbers on the two dice is 10.
A letter is chosen from the word ‘PENCIL’ what is the probability that the letter chosen is a consonant?
Three identical coins are tossed together. What is the probability of obtaining:
no head?
Two dice are rolled, find the probability that the sum is equal to 1
A diece is tossed two times. The number of possible outcomes is ______.
