Answer:
35 ways
Step-by-step explanation:
The selection process in the given question can be referred to as combination, since 4 pairs of jeans are to be selected from the 7 pairs. There is no specific pattern of selecting the 4 pairs.
Thus, the selection can be done in 7[tex]C_{4}[/tex] ways.
7[tex]C_{4}[/tex] = [tex]\frac{7!}{(7-4)!4!}[/tex]
= [tex]\frac{7!}{3!4!}[/tex]
= [tex]\frac{7*6*5*4!}{3*2!4!}[/tex]
= 7 x 5
= 35
Therefore, 4 pairs of jeans can be selected from 7 pairs in 35 ways.
