How many different section of 4 books can be made from 10 different books if two particular books are never selected? Choices
A) 90 B) 50 C) 60 D) 80 E) 70
This means four books are seclected out of the remaining 8 books. Required number of ways = 8C4= 8!/4!x4!=70. Ans: 70.
<result>E</result>
How many different section of 4 books can be made from 10 different books if two particular books are never selected?