How many different sections of 4 books can be made from 10 different books if two books are always selected. Choose the correct choice from the following options:	A) 48	B) 18	C) 38	D) 28	E) 35
If two particular books are always selected. This means two books are selected out of the remaining 8 books. Required number of ways =8C2 =8!/2!6! =28. Answer : 28
<result>D</result>
How many different sections of 4 books can be made from 10 different books if two books are always selected.