Advertisements
Advertisements
प्रश्न
One coin and a die are thrown simultaneously. Find the probability of the following event:
Event B: To get a tail and an odd number.
उत्तर
One coin and a die are thrown simultaneously.
Sample space,
S = {(H, 1), (H, 2), (H, 3), (H, 4), (H, 5), (H, 6), (T, 1), (T, 2), (T, 3), (T, 4), (T, 5), (T, 6)}
∴ n(S) = 12
Event B: To get a tail and an odd number.
∴ B = {(T, 1), (T, 3), (T, 5)}
∴ n(B) = 3
∴ P(B) = `("n"("B"))/("n"("S"))`
∴ P(B) = `3/12`
∴ P(B) = `1/4`
∴ The probability of event B is `1/4`.
APPEARS IN
संबंधित प्रश्न
The six faces of a die are marked
The event M is getting a vowel on the upper face of the die when it is tossed. Complete the following activity and find the probability of the event.
`"S" = {square}`
`"n"("S") = square`
`"M" = {square}`
`"n"("M") =square`
`"P"("M") = square/square=square`
Which of the following options shows the highest probability?
In Adarsh High School, out of 30 students in a class 3 students wear glasses (spectacles). If a student in the class is randomly selected, find the probability that he or she wears glasses (spectacles) by completing the following activity
Activity: There are a total of 30 students in the class.
∴ n(S) = `square`
Event: A selected student wears glasses (spectacles).
∴ n(A) = `square`
P(A) = `square/("n"("S"))` ......[Formula]
P(A) = `square`
If two coins are tossed, find the probability of event getting head on both the coins
If three coins are tossed simultaneously, find the probability of the event to get no head
If three coins are tossed simultaneously, find the probability of the following events.
Event B: To get at least two heads.
If One coin and one die are thrown simultaneously, find the probability of the following events.
Event B: To get head and an odd number
A bag contains 8 red and some blue balls. One ball is drawn at random from the bag. If ratio of probability of getting red ball and blue ball is 2:5, then find the number of blue balls.
Let A and B be two events such that the probability that exactly one of them occurs is `2/5` and the probability that A or B occurs is `1/2`, then the probability of both of them occur together is ______.
One coin and a die are thrown simultaneously. Find the probability of the following event:
Event A: To get a head and a prime number.
