A. 0.4869
B. 0.5904
C. 0.6234
D. 0.5834
Explanation:
P(winning prize atleast on one ticket)
= 1 – P(“Losing on all tickets”)
= 1 – (0.8)4 = (1 + (0.8)2)(1 – (0.8)2)
= (1.64)(0.36) = 0.5904
Related Mcqs:
- A basket has 5 apples and 4 oranges. Three fruits are picked at random. The probability that at least 2 apples are picked is__________?
A. 25/42
B. 9/20
C. 10/23
D. 41/42 - The probability that A speaks truth is 3/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?
A. 18/35
B. 12/35
C. 17/35
D. 19/35 - A coin is tossed live times. What is the probability that there is at the least one tail?
A. 31/32
B. 1/16
C. 1/2
D. 1/32 - A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good.
A. 6/63
B. 2/63
C. 125/126
D. 1/126 - In a party there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at the least two couples?
A. 5/21
B. 5/14
C. 9/14
D. 16/21 - Out of 10 persons working on a project, 4 are graduates. If 3 are selected, what is the probability that there is at least one graduate among them?
A. 1/6
B. 5/8
C. 3/8
D. 5/6 - The probability that a number selected at random from the first 50 natural numbers is a composite number is__________?
A. 21/25
B. 17/25
C. 4/25
D. 8/25 - If four coins are tossed, the probability of getting two heads and two tails is__________?
A. 3/8
B. 6/11
C. 2/5
D. 4/5 - If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is__________?
A. 1/4
B. 1/2
C. 3/4
D. 3/5 - Three 6 faced dice are thrown together. The probability that no two dice show the same number on them is__________?
A. 7/12
B. 5/9
C. 1/36
D. 5/12
