Question

The number of ways in which 12 books can be put in 3
shelves, 4 on each, is
(a) 12 !/(4 !)³ (b) 12 !/ ((3 !) (4 !)³)
(c) 12 !/ ((3 !)³ (4 !)) (d) none of these

Answer 1

(b) 12!/ ((3!) (4 !)³)

Step-by-step explanation:

bcoz-4×3=12