Read the passage and answer the following questions:
Five balls are to be placed in 3 boxes. Each can hold all the five balls. In how many ways can we place the balls so that no box remains empty, when
i. Balls and boxes are all different
a. 150
b. 6
c. 50
d. 2
ii. balls are identical but boxes are different
a. 150
b. 6
c. 50
d. 2
iii. balls are different but boxes are identical
a. 150
b. 6
c. 50
d. 2
iv. balls as well as boxes are identical.
a. 150
b. 6
c. 50
d. 2
