Probability - Online Test
Q1. The probability that a teacher will give an unannounced test during any class is. If a student is absent twice, then the probability that he misses atleast one test is
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. If the probability for A to fail in an examination is 0.2 and that for B is 0.3, then the probability that either A fails or B fails is
Answer : Option A
Explaination / Solution:
No Explaination.
Q3. In a single throw of two dice, the probability of getting a total of 7 or 9 is
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. A box contains 100 tickets numbered 1, 2, 3, ….100. Two tickets are chosen at random. If it is given that the maximum number on the two chosen tickets is not more than 10, then the probability that the minimum number on them is not less than 5 is
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. Let A and B be two independent events. The probability that both A and B occur is and the probability that neither A nor B occurs is . The respective probabilities of A and B are
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. Two events A and B have probabilities 0.25 and 0.50 respectively. The probability that both A and B occur simultaneously is 0.14. Then the probability that neither A nor B occurs is
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. India plays two matches each with West Indies and Australia. In any match the probabilities of India getting points 0, 1 and 2 are 0.45, 0.5 and 0.5 respectively. Assuming that the outcomes are independent, the probability of India getting atleast 7 points is
Answer : Option C
Explaination / Solution:
No Explaination.
Q8. An unbiased dice is rolled four times. The probability that the minimum number on any toss is not less than 3 is
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. The probability that a man will live for 10 more years is and that his wife will live 10 more years is. The probability that neither will be alive in 10 years is
Answer : Option A
Explaination / Solution:
No Explaination.
Q10. The probability of having atleast one tail in five throws with a coin is
Answer : Option A
Explaination / Solution:
No Explaination.
