CBSE Class 9 Probability Sure Shot Questions

CBSE Class 9 Probability Sure Shot Questions. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations.  Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects.

1. Write all possible outcomes when

(i) one coin is tossed.

(ii) two coins are tossed.

(iii) one die is rolled.

2. Three coins are tossed simultaneously 100 times. The following outcomes are recorded. 

 Find the probability of coming up more than one tail.

3. A die is thrown 300 times with the frequencies for the outcomes 1, 2, 3, 4, 5 and 6 as given in the following table :

Find the probability of getting (i) an even number (ii) a prime number and

(iii) a number more than 4.

4. A box contains 3 blue, 2 white, and 4 red marbles. If a marble is drawn at random from the box, what is the probability that it will be (i) white? (ii) blue? (iii) red?

5. A coin is tossed 1000 times with the following frequencies: Head : 455, Tail : 545 Compute the probability for getting head.

6. Two coins are tossed simultaneously 500 times, and we get Two heads : 105 times, One head : 275 times and No head : 120 times. Find the probability of occurrence of two heads.

7. A die is thrown 1000 times with the frequencies for the outcomes 1, 2, 3, 4, 5 and 6 as given inthe following table :

 Find the probability of getting (i) an odd number (ii) a prime number and (iii) a number greater than 4.

8. 12 defective pens are accidentally mixed with 132 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen is taken out at random from this lot. Determine the probability that the pen taken out is a good one.

9. On one page of a telephone directory, there were 200 telephone numbers. The frequency distribution of their unit place digit (for example, in the number 25828573, the unit place digit is 3) is given in Table 15.7  

 Without looking at the page, the pencil is placed on one of these numbers, i.e., the number is chosen at random. What is the probability that the digit in its unit place is (i) an odd number (ii) a prime number and (iii) a number greater than 4.?

 

 

If the dice are thrown once more, what is the probability of getting a sum (i) 3? (ii) more than 10? (iii) less than or equal to 5? (iv) between 8 and 12?

Please click the link below to download CBSE Class 9 Probability Sure Shot Questions.