Probability of an Event "A" Not to Happen
Trending Questions
In a cricket match, a batsman hits a boundary 6 times out of the 30 balls he plays. Find the probability of him not hitting a boundary on the balls he plays.
0.2
0.8
0.6
0.4
A bag contains 12 balls of which 'x' are white.
(i) If one ball is drawn at random, what is the probability that it will be a white ball?
(ii) If 6 more white balls are put in the bag, the probability of drawing a white ball will be double than that in case (i), Find x. [4 MARKS]
Six cards are drawn simultaneously from a pack of playing cards. What is the probability that will be red and black
A bag contains white, black, and red balls. If a ball is drawn at random, then what is the probability that the drawn ball is either white or red
A jar contains 24 marbles of which some are green and others are blue. If a marble is drawn randomly from the jar, the probability that it is green is 23. Find the probability of drawing a blue marble from the jar.
12
14
23
13
Out of 100 balls in a bag 30 are green, 35 are blue and 35 are red. Find the probability that a ball drawn from the bag is (i) green (ii) blue (iii) red.
Two dice are thrown simultaneously. What is the probability of not getting the same numbers on both the dice? |
16
14
56
34
i) white
ii) neither red nor white
iii) either white or red or black
iv) not black
[4 MARKS]
A regular hexagon is drawn with its vertices on a circle as shown in the figure. Without looking into it, if one randomly puts a dot in it, what is the probability of the dot not being in the regular hexagon?
3√3π
32π
3√32π
3√32
A bag contains three green marbles, four blue marbles, and two orange marbles. If a marble is picked at random, then the probability that it is not an orange marble is
13
14
49
79
Out of all the two digit numbers, what is the probability of the number not being a perfect square?
1415
1418
1215
115
A bag contains 12 balls of which 'x' are white.
(i) If one ball is drawn at random, what is the probability that it will be a white ball?
(ii) If 6 more white balls are put in the bag, the probability of drawing a white ball will be double than that in case (i), Find x. [4 MARKS]
- 413
- 213
- 513
- 613
A bag contains 4 red and 8 blue marbles. A marble is drawn at random. The probability of drawing red is
16
13
23
18
- 5%
- 50%
- 25%
- None of the above
A bag contains 3 red balls, 5 black balls, and 4 white balls. A ball is drawn at random from the bag. What is the probability of not getting a black ball?
14
13.
712
1
1/2
1/3
2/3
3/4
A school has five houses A, B, C, D and E. A class has 23 students, 4 from house A, 8 from house, B, 5 from house C, 2 from house D and rest from house E. A single student is selected at random to be the class monitor. The probability that the selected student is not from A, B and C is
(a) 423
(b) 623
(c) 823
(d) 1723
If the probability of a day being rainy is 0.75, then the probability of it not being a rainy day is ___.
0.50
0.75
0.25
0
An equilateral triangle is drawn with its vertices if we put a dot in it without looking into the picture, find the probability of the dot being outside the triangle?
- 0.79
- 0.25
- 0.50
- 0.36
- False
- True
1/2
1/3
2/3
3/4
In a cricket match, a batsman hit a boundary 6 times (out of 30 balls). Find the probability that next ball he plays is not a boundary.
0.2
0.4
0.6
0.8