Question

In a garden, 3 over 4 of the flowers are red and the rest are yellow. If there are 456 yellow flowers, find the number of red flowers

Answer 1

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)=105=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)=102=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)=103=0.3

Now, P(C)=1−P(C)=1−0.3=0.7