Скачать или смотреть Math 🔥| Class-10 | Unit-15 | Probability | Exercise 15.2 (Full Solution) 👌 | SANJU JANGRA SIR

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Exercise 15.2
Q1. Two customer Shyam and Ekta are visiting a particular shop in the same week (Tuesday to Saturday). Each is equally likely to visit the shop on any day. What is the probability that both will visit the shop on :
i) The same day ?
ii) Consecutive days ?
iii) Different days ?

Q2. A die is numbered is such a way that its faces show the number 1,2,2,3,3,6. It is thrown two times and the total score in two throws is noted. Complete the following table which gives a few values of the total score on the two throws:
a) even ?
b) 6?
c) at least 6?

Q3. A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, determine the number of blue balls in the bag.

Q4. A box contains 12 balls out of which 𝑥 are black. If one ball is drawn at random from the box, what is the probability that it will be a black ball?
If 6 more black balls are put in the box, the probability of drawing a black ball is now double of what it was before. Find 𝑥.

Q5. Which of the following arguments are correct and which are not correct? Give reasons for your answer.
(i) If two coins are tossed simultaneously there are three possible outcomes - - two heads, two tails or one of each. Therefore, for each of these outcomes, the probability is 1/3.
(ii) If a die is thrown, there are two possible outcomes - - an odd number or an even number. Therefore, the probability of getting an odd number is 1/2 .

Q 6. A jar contains 24 marbles, some are green and others are blue. If a marble is drawn at random from the jar, the probability that it is green is 2/( 3 ) . Find the number of blue balls in the jar.