8. In a bouquet, there are 5 red roses, 6 white roses and 4 pink roses. Chestha picks up a rose without looking at it. What is the probability that it will be a red rose?
Answers
Answer:
Total number of roses in the flower pot =5+3+2=10
∴ Number of possible outcomes to select a rose at random is 10.
(i) Let 'A' be the event that the selected rose is of red colour.
No. of red roses in the flower pot =5
∴P(A)=
10
5
=0.5
(ii) Let 'B' be the event that the selected rose of of yellow colour.
No. of yellow roses in the flower pot =2
∴P(B)=
10
2
=0.2
(iii) Let C be the event when the selected rose is white in colour.
Then,
C
is the event when the selected rose is not of white colour.
No. of white roses in the flower pot =3
∴P(C)=
10
3
=0.3
Now, P(C )=1−P(C)=1−0.3=0.7
Step-by-step explanation:
Answer:
Given:
- In a bouquet, there are 5 red roses, 6 white roses and 4 pink roses. Chestha picks up a rose without looking at it.
Find:
- What is the probability that if it will be a red rose?
Calculations:
⇒ Numbers of red roses = 5
⇒ Number of white roses = 6
⇒ Number of pink roses = 4
Finding the probability oif it will be red rose.
⇒ Probability = Total number of roses/Number of roses taken.
⇒ Probability = 5/1
Therefore, 5/1 is the probability of red rose.
Or
Finding the probability of total number of roses.
⇒ Total number of roses = (5 + 6 + 4)
⇒ Total number of roses = 15
⇒ Probability = 15/1
Therefore, 15/1 is the probability of total number of roses.