SSLC Maths English Medium - Probability One Mark Questions Online Test

Maths - Probability

Maths - Probability

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1. If ᵩ is an impossible event, then P(ᵩ)=
   1.   1
   2.   1/4
   3.   0
   4.   1/2
2. If S is the sample space of a random experiment, then P(S) =
   1.   0
   2.   1/8
   3.   1/2
   4.   1
3. If p is the probability of an event A, then p satisfies
   1.   0<p<1
   2.   0≤p≤1
   3.   0≤p<1
   4.   0<p≤1
4. Let A and B be any two events and S be the corresponding sample space.Then P(Ā∩B) =
   1.   P(B)-P(A∩B)
   2.   P(A∩B)-P(B)
   3.   P(S)
   4.   P[(A∪B)′]
5. The probability that a student will score centum in mathematics is 4/5 . The probability that he will not score centum is
   1.   1/5
   2.   2/5
   3.   3/5
   4.   4/5
6. If A and B are two events such that P(A)=0.25 ,P(B)=0.05,and P(A∩B)=0.14,then P(A∪B)=
   1.   0.61
   2.   0.16
   3.   0.14
   4.   0.6
7. There are 6 defective items in a sample of 20 items. One item is drawn at random. The probability that it is a non-defective item is
   1.   7/10
   2.   0
   3.   3/10
   4.   2/3
8. If A and B are mutually exclusive events and S is the sample space such that P(A)=1/3P(B) ,and S=AUB then P(A)=
   1.   1/4
   2.   1/2
   3.   3/4
   4.   3/8
9. The probabilities of three mutually exclusive events A, B and C are given by 1/3,1/4, and 5/12 Then P(AUBUC)is
   1.   19/12
   2.   11/12
   3.   7/12
   4.   1
10. If P(A)=0.25,P(B)=0.50,P(A∩B)=0.14 then P(neither A nor B)=
    1.   0.39
    2.   0.25
    3.   0.11
    4.   0.24
11. A bag contains 5 black balls, 4 white balls and 3 red balls. If a ball is selected at random, the probability that it is not red is
    1.   5/12
    2.   4/12
    3.   3/12
    4.   3/4
12. Two dice are thrown simultaneously. The probability of getting a doublet is
    1.   1/36
    2.   1/3
    3.   1/6
    4.   2/3
13. A fair die is thrown once. The probability of getting a prime or composite number is
    1.   1
    2.   0
    3.   5/6
    4.   1/6
14. Probability of getting 3 heads or 3 tails in tossing a coin 3 times is
    1.   1/8
    2.   1/4
    3.   3/8
    4.   1/2
15. A card is drawn from a pack of 52 cards at random. The probability of getting neither an ace nor a king card is
    1.   2/13
    2.   11/13
    3.   4/13
    4.   8/13
16. The probability that a leap year will have 53 Fridays or 53 Saturdays is
    1.   2/7
    2.   1/7
    3.   4/7
    4.   3/7
17. The probability that a non-leap year will have 53 Sundays and 53 Mondays is
    1.   1/7
    2.   2/7
    3.   3/7
    4.   0
18. The probability of selecting a queen of hearts when a card is drawn from a pack of 52 playing cards is
    1.   1/52
    2.   16/52
    3.   1/13
    4.   1/26
19. Probability of sure event is
    1.   1
    2.   0
    3.   100
    4.   0.1
20. The outcome of a random experiment results in either success or failure. If the probability of success is twice the probability of failure, then the probability of success is
    1.   1/3
    2.   2/3
    3.   1
    4.   0