Question

A certain type of bird has a probability of 1/12 Harding a bird with white feather. If a bird lays 2 eggs, find the probability of hatching

A) exactly one bird with white feathers

B) at least one bird with white feathers.

Answer 1

A.
`(1)/(12)*(1-(1)/(12))\\(1)/(12)*(11)/(12)\\(11)/(144)`

B.
`(1)/(12)*(1-(1)/(12))+(1)/(12)*(1)/(12)\\(1)/(12)*(11)/(12)+(1)/(144)\\(11)/(144)+(1)/(144)\\(12)/(144)\\(1)/(12)`