58544.The probability of event equal to zero is called;
Unsure event
Sure Event
Impossible event
Independent event
Explanation:
The probability of an event that cannot happen or which is impossible, is equal to zero.
58545.The probability that cannot exist among the following:
$\dfrac{2}{3}$
-1.5
15%
0.7
Explanation:
The probability lies between 0 and 1. Hence, it cannot be negative.
58546.If P(E) = 0.07, then what is the probability of ‘not E’?
0.93
0.95
0.89
0.90
Explanation:
P(E) + P(not E) = 1
Since, P(E) = 0.05
So, P(not E) = 1 – P(E)
Or, P(not E) = 1 – 0.07
∴ P(not E) = 0.93
58547.A bag has 3 red balls and 5 green balls. If we take a ball from the bag, then what is the probability of getting red balls only?
3
8
$\dfrac{3}{8}$
$\dfrac{8}{3}$
Explanation:
Number of red balls = 3
Number of green balls = 5
Total balls in bag = 3+5 = 8
Probability of getting red balls = $\dfrac{number \: of \: red \: balls}{total \: number \: of \: balls}$
= $\dfrac{3}{8}$
58548. A bag has 5 white marbles, 8 red marbles and 4 purple marbles. If we take a marble randomly, then what is the probability of not getting purple marble?
0.5
0.66
0.08
0.77
Explanation:
Total number of purple marbles = 4
Total number of marbles in bag = 5 + 8 + 4 = 17
Probability of getting purple marbles = $\dfrac{4}{17}$
Hence, the probability of not getting purple marbles = 1-$\dfrac{4}{17}$ = 0.77
58549. A dice is thrown in the air. The probability of getting odd numbers is
$\dfrac{1}{2}$
$\dfrac{3}{2}$
3
4
Explanation:
A dice has six faces having values 1, 2, 3, 4, 5 and 6.
There are three odd numbers and three even numbers.
Therefore, the probability of getting only odd numbers is = $\dfrac{3}{6} = \dfrac{1}{2}$
58550.The sum of the probabilities of all the elementary events of an experiment is
0.5
1
2
1.5
Explanation:
The sum of the probabilities of all the elementary events of an experiment is equal to 1.
58551.A card is selected at random from a well shuffled deck of 52 playing cards. The probability of its being a face card is
$\dfrac{3}{13}$
$\dfrac{4}{13}$
$\dfrac{6}{13}$
$\dfrac{9}{13}$
Explanation:
Total number of outcomes = 52
Number of face cards = 12
The probability of its being a face card = $\dfrac{12}{52} = \dfrac{3}{13}$
58552.If an event cannot occur, then its probability is
1
$\dfrac{3}{4}$
$\dfrac{1}{2}$
0
Explanation:
If an event cannot occur, then its probability is 0.
58553.An event is very unlikely to happen. Its probability is closest to
0.0001
0.001
0.01
(d) 0.1
Explanation:
The probability of an event which is very unlikely to happen is closest to zero.
Thus, 0.0001 is the probability of an event which is very unlikely to happen.
