Probability Test

Result

Probability Test - 81

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

Three six faced fair dice are thrown together. The probability that the sum of the numbers appearing on the dice is k (3 ≤ k ≤ 8), is

A

B

C

D
None of these

Solution
Question 2
4 / -1

Out of 21 tickets marked with numbers from 1 to 21, three are drawn at random. The chance that the numbers on then are in AP is

A
10/133

B
9/133

C
9/1330

D
None of these

Solution
Question 3
4 / -1

Three squares of a chess board the chosen at random, the probability that two are of one color and one of another is

A
16/21

B
8/21

C
32/12

D
None of these

Solution
Question 4
4 / -1

A five digit number id formed by writing the digits 1, 2, 3, 4, 5 in a random order without repetitions. Then, the probability that the number is divisible by 4 is

A
3/5

B
18/5

C
1/5

D
6/5

Solution
Question 5
4 / -1

If a party of n persons sit at a round table, then the odds against two specified individuals sitting next to each other are

A

B

C

D

Solution
Question 6
4 / -1

A complete cycle of a traffic light takes 60 seconds. During each cycle the light is green for 25 seconds, yellow for 5 seconds and red for 30 seconds. At a randomly chosen time, the probability that the light will not green is

A
1/3

B
1/4

C
4/12

D
7/12

Solution
Question 7
4 / -1

A pair of fair dice is rolled together till a sum of either 5 or 7 is obtained. Then the probability that 5 comes before 7 is

A
1/5

B
2/5

C
4/5

D
None of these

Solution
Question 8
4 / -1

Two dice are thrown simultaneously. The probability that sum is odd or less than 7 or both is

A
2/3

B
1/2

C
3/4

D
1/3

Solution
Question 9
4 / -1

A student appears for test I, II and III. The student is successful is he passes either in test I and II or test I and III. The probabilities of the student passing in test I, II, III are p, q and 1/2 respectively. If the probability that the student is successful is 1/2, then

A

B

C
There are infinitely many values of p and q

D
All of the above

Solution
Question 10
4 / -1

For the three events A, B and C, P (exactly one of the events A or B occurs) = P(exactly one of the events B or C occurs) = P(exactly one of the events C or A occurs) = p and P (all the three events occur simultaneously) = p², where 0 < p < 1/2. Then the probability of at least one of the three events A, B and C occurring is

A

B

C

D

Solution