10 - Maths - Unit 12. Probability

20 Questions | By Padasalai10m | Updated: Mar 22, 2022 | Attempts: 2945

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10 - Maths - Unit 12. Probability - Quiz

Prepared by Mr. A. GANESAN, VICE PRINCIPAL, SHRI GURU BRAMMA VIDHYALAYA, KARUR-5 ; &nbs p; & www. Padasalai. Net

Questions and Answers

1.

If S is the sample space of a random experiment, then P(S) =
- A.
  
  1
- B.
  
  0
- C.
  
  1/8
- D.
  
  1/2
2.

If p is probability of an event A, then p satisfies =
- A.
  
  0 ≤ p ≤ 1
- B.
  
  0 < p < 1
- C.
  
  0 ≤ p < 1
- D.
  
  0 < p ≤ 1
3.

Let A and B be any two events and S be the corresponding sample space. Then P(Ā ∩B)=
- A.
  
  P(B)- P(A∩B)
- B.
  
  P (A ∩B)- P(B)
- C.
  
  P(S)
- D.
  
  P[ (AUB)']
4.

The Probability that a student will score centum in mathematics is 4/5. The Probability that he will not score centum is =
- A.
  
  1/5
- B.
  
  2/5
- C.
  
  3/5
- D.
  
  4/5
5.

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(AUB) =
- A.
  
  0.16
- B.
  
  0.61
- C.
  
  0.14
- D.
  
  0.6
6.

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
- A.
  
  7/10
- B.
  
  0
- C.
  
  3/10
- D.
  
  2/3
7.

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)=
- A.
  
  1/4
- B.
  
  1/2
- C.
  
  3/4
- D.
  
  3/8
8.

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
- A.
  
  1
- B.
  
  19/12
- C.
  
  11/12
- D.
  
  7/12
9.

If P(A)= 0.25 , P(B)= 0.50 , P(AB) = 0.14 then P(neither A or B ) =
- A.
  
  0.39
- B.
  
  0.25
- C.
  
  0.11
- D.
  
  0.24
10.

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 =
- A.
  
  3/4
- B.
  
  5/12
- C.
  
  4/12
- D.
  
  3/12
11.

Two dice are thrown simultaneously. The probability of getting a doublet is =
- A.
  
  1/6
- B.
  
  1/36
- C.
  
  1/3
- D.
  
  2/3
12.

A fair die is thrown once . The probability of getting a prime or composite number is
- A.
  
  5/6
- B.
  
  1
- C.
  
  0
- D.
  
  1/6
13.

Probability of getting 3 heads or 3 tails in tossing a coin 3 times is
- A.
  
  1/4
- B.
  
  1/8
- C.
  
  3/8
- D.
  
  1/2
14.

A card is drawn from a pack of 52 cards at random. The probability of getting neither an ace nor a king card is
- A.
  
  11/13
- B.
  
  2/13
- C.
  
  4/13
- D.
  
  8/13
15.

The probability that a leap year will have 53 fridays or 53 saturdays is
- A.
  
  3/7
- B.
  
  2/7
- C.
  
  1/7
- D.
  
  4/7
16.

The Probability that a non-leap year will have 53 Sundays and 53 Mondays is
- A.
  
  0
- B.
  
  1/7
- C.
  
  2/7
- D.
  
  3/7
17.

The Probability of selecting a queen of hearts when a cards is drawn from a pack of 52 playing cards is
- A.
  
  1/52
- B.
  
  16/52
- C.
  
  1/13
- D.
  
  1/26
18.

The Probability of sure event is
- A.
  
  1
- B.
  
  0
- C.
  
  100
- D.
  
  0.1
19.

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
- A.
  
  2/3
- B.
  
  1/3
- C.
  
  1
- D.
  
  0
20.

If Ø is an impossible event, then P(Ø) =
- A.
  
  0
- B.
  
  1
- C.
  
  1/4
- D.
  
  1/2