Advertisements
Advertisements
Question
A handbag contained fifty ten rupees note, thirty-five fifty rupees note and fifteen hundred rupee note. One note is drawn from a handbag. What is the probability of getting:
Ten rupees note
Solution
Total number of notes = 50 + 35 + 15 = 100
Let E1 represent the event in which the chosen note is a 10 rupee note.
The number of ten rupee notes is 50.
Thus, P(E1) = `"Number of ten rupees note"/"Total number of notes"`
= `50/100`
= `1/2`
APPEARS IN
RELATED QUESTIONS
Three coins are tossed simultaneously, find S and n(S).
Two-digit numbers are formed from the digits 0,1,2,3,4 where digits are not repeated. Find the probability of the events that:
(a) The number formed is an even number.
(b) The number formed is a prime number.
If n(A) = 5 , P(A) = `1/2` then n(S) = ?
A card is drawn from a well shuffled pack of 52 playing cards. Find the probability of the event, the card drawn is a red card.
Activity: Let ‘S’ be the sample space.
∴ n(S) = 52
Event A: Card drawn is a red card.
∴ Total red cards = `square` hearts + 13 diamonds
∴ n(A) = `square`
∴ P(A) = `square/(n("S"))` ......[Formula]
P(A) = `26/52`
P(A) = `square`
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 One coin and one die are thrown simultaneously, find the probability of the following events.
Event A: To get a tail and an even number
A box contains 36 cards, bearing only one number from 1 to 36 on each. If one card is drawn at random, find the probability of an event that the card drawn bears, a complete square number
A bag contains 5 white balls and some blue balls. If the probability of drawing a blue ball is double that of a white ball, determine the number of blue balls in the bag
A missing helicopter is reported to have crashed somewhere in the rectangular region shown in the figure. What is the probability that it crashed inside the lake shown in the figure?
Using the digits 0, 2, 3, 5 the two-digit numbers are constructed without repetition of digits. Find the probability of the following events:
Condition for event B: The number formed is prime number.
A handbag contained fifty ten rupees note, thirty-five fifty rupees note and fifteen hundred rupees note. One note is drawn from a handbag. What is the probability of getting:
Fifty rupees note
Let E be an event and P(E) = `6/7`, then find the value of P(not E).
The probability that a relation R from {x, y} to {x, y} is both symmetric and transitive, is equal to ______.
A coin is tossed twice and the four possible outcomes are assumed to be equally likely. If A is the event, 'both head and tail have appeared' and B the event,' at most one tail is observed,' then the value of P(B/A) is ______.
A card is drawn from well shuffled pack of 52 playing cards. Find the probability that the card drawn is a face card.
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.