Question

There are n nonfiction books and 12 fiction books on a bookshelf. If one of these books is selected at

random, what is the probability of selecting a nonfiction book, in terms of n?
A
n
12
B
n
n +12
С
12
n
D
12
n+12

Answer 1

`P=(n)/(n+12)`

Explanation:

Number of non-fiction books = n

Number of fiction books = 12

We need to find the probability of selecting a nonfiction book, in terms of n.

Total no of books = non-fiction books + fiction books

= n+12

Probability = favourable outcomes/total no of outcomes

Here, favourable outcomes = n

So,

`P=(n)/(n+12)`

Hence, the probability of selecting a non-fiction is
`(n)/(n+12)`.