The probability that a random bird chosen from among these is not a duck is 98/131.
What is probability?
Probability is the likelihood of an event.
To find probability that a random bird chosen from among these is NOT a duck Given the total number of birds = 262
No of geese = 65
No of ducks = 84
No of robins = 133, we proceed as follows.
To find the probability of not a duck, P(not duck) = total number of birds not a duck/total number of birds.
So, total number of bords not a duck = No of geese + No of robins
= 65 + 133
= 198
Total number of birds = 262
So, the probability of not a duck, P(not duck) = total number of birds not a duck/total number of birds.
= 198/262
= 98/131
So, P(not duck) = 98/131