Advertisements
Advertisements
प्रश्न
In a single throw of a dice, find the probability of getting a number not greater than 4.
उत्तर
Sample space = {1, 2, 3, 4, 5, 6}
n(s) = 6
E = event of getting a number not greater than 4 = {1, 2, 3, 4}
n(E) = 4
Probability of a number not greater than 4 = `(n(E))/(n(s)) = 4/6 = 2/3`
APPEARS IN
संबंधित प्रश्न
Write the sample space for selecting a day randomly of the week.
‘A coin is tossed’. Write the sample space ‘S’.
For the following experiment write sample space ‘S’ and number of sample points n(S).
Two-digit numbers are formed using digits 2, 3 and 5 without repeating a digit.
Write sample space ‘S’ and number of sample point n(S) for the following experiment. Also write events A, B, C in the set form and write n(A), n(B), n(C).
One die is rolled,
Event A : Even number on the upper face.
Event B : Odd number on the upper face.
Event C : Prime number on the upper face.
Write sample space ‘S’ and number of sample point n(S) for the following experiment. Also write events A, B, C in the set form and write n(A), n(B), n(C).
Two dice are rolled simultaneously,
Event A : The sum of the digits on upper faces is a multiple of 6.
Event B : The sum of the digits on the upper faces is minimum 10.
Event C : The same digit on both the upper faces.
If two coins are tossed, find the probability of the following event.
Getting no head ?
If two dice are rolled simultaneously, find the probability of the following event. The sum of the digits on the upper faces is 33.
Do the following activity -
Activity II : Decide the sample space yourself and fill in the following boxes.
When two dice are thrown, the number of sample points in the sample space are ______
Two coins are tossed simultaneously. Complete the following activity to write the sample space and the given events A and B in the set form:
Event A: To get at least one head.
Event B: To get no head.
Activity:
Two coins are tossed simultaneously.
∴ Sample space is
S = `{square, HT, TH, square}`
Event A: To get at least one head.
∴ A = `{square, HT, TH}`
Event B: To get no head.
∴ B = `{square}`
