Chapter-25 Probability Ex 25(C) Q 14-26 ICSE Class 10 Selina Math Chapter 25 Part-2 By Parag Sir
In this video, you will get solution of Exercise 25(C), Part-2 Ques 14-26 Video, Concept with question Solution in a simple and understanding way.........
Selina is best book for ICSE class 10th math
@boardmath @tacticsofmathematics
@tacticsofmathematics
14. A bag contains a certain number of red balls. A ball is drawn. Find the probability that the ball drawn is:
Black red
15. The probability that two boys do not have the same birthday is 0.897. What is the probablity that the two boys have the same birthday?
16. A bag contains 10 red balls, 16 white balls and 8 green balls. A ball is drawn out of the bag at random. What is the probability that the ball drawn will be:
Not red, neither red not green, white or green
17. A bag contains twenty Rs 5 coins, fifty Rs 2 coins and thirty Rs 1 coins. If it is equally likely that one of the coins will fall down when the bag is turned upside down. What is the probability that the coin:
Will be a Rs 1 coin, will not be a Rs 2 coin, will neither be a Rs 5 coin nor be a Rs 1 coin
18. A game consists of spinning an arrow which comes to rest pointing at ne of the numbers 1,2,3,4,5,6,7,8,9,10,11,12; as shown below. If the outcomes are equally likely, find the probability that the pointer will point at:
6, A prime number, a number greater than 8, a number less than or equal to 9, a number between 3 and 11
19. One card is drawn from a well-shuffled deck of 52 cards. Find the probability of getting:
A queen of red colour, a black face card, the jack or the queen of hearts, a diamond, a diamond or a spade.
20. From a deck of 52 cards, all the face cards are removed and then the remaining cards are shuffled. Now one card is drawn from the remaining deck. Find the probability that the card drawn is:
A black card, 8 of red colour, a king of black colour,
21. seven cards : the eight, the nine, the ten, the jack, the queen, the king and ace of diamonds are well shuffled. One card is the picked up at random.
What is the probability that the card drawn is the eight or the king.
If the king is drawn and put aside, what is the probability that the second card picked up is : an ace, a king.
22. A box contains 150 bulbs out of which 15 are defective. It is not possible to just look at a bulb and tell whether or not it is defective. One bulb is taken out at random from this box. Calculate the probability that the bulb taken out is :
a good one
a defective one.
23 i) 4 defective pens are accidentally mixed with 16 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen is drawn at random from the lot. What is the probability that the pen is defective ?
ii) Suppose the pen drawn in (i) is defective and is not replaced. Now one more pen is drawn at random from the rest. What is the probability that this pen is:
(a) defective (b) not defective
24 A bag contains 100 identical marble stones which are numbered from 1 to 100. If one stone is drawn at random from the bag, find the probability that it bears :
(i) a perfect square number. (ii) a number divisible by 4. (iii) a number divisible by 5.
(ii) (iv) a number divisible by 4 or 5 (v) a number divisible by 4 and 5.
25. 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 :
(i) inside the circle. ii) outside the circle.
26. Two dice (each bearing numbers 1 to 6) are rolled together. Find the probability that the sum of the numbers on the upper-most faces of two dice is :
(i) 4 or 5. (ii) 7, 8 ог 9. (iii) between 5 and 8. (iv) more than 10. (v) less than 6.
PLEASE LIKE, SUBSCRIBE AND SHARE WITH YOUR FRIENDS!!!
If there is any suggestion related to the video, you can comment me...!
Информация по комментариям в разработке