Question
A bowl contains 9 blue balls, 7 white, and 5 black
balls. If 2 balls are drawn in one go, then the probability of exactly one ball being blue is:Solution
In total, we have 9+7+5=21 balls. We have drawn 2 balls; we can draw them in 21C2 ways = 21! ÷ (19! ×2!) = 210 ways. In those two balls, we need one to be a blue ball, so we can include that in 9C1 ways = 9 ways. The remaining ball may be any color ball but not white, so we select other balls in 12C1 ways= 12ways. Probability= (9×12)/210 =18/35.
Awn character in rice (awn & awnless) is an example of ____
Which one of the following is not a property of a good host for gene cloning?
Clostridium bacteria is responsible for spoilage of
The director of APEDA is appointed by:
The process of removing the green colouring (known as chlorophyll) from the skin of citrus fruit. This is achieved by introducing measured amounts of et...
The 3rd day of the 5 days training program for designated Officer focuses on:
Dehaulming in potato is done by which chemical?
MDI (Moisture deficit Index) is
The efficiency range of a diesel engine used in agriculture is:
Vertical resistance is also referred as
Relevant for Exams:
