Number of ways of arranging 8 identical books into 4 identical shelves where any number of shelves may remain empty is equal to (1) 18 (2) 16 (3) 12 (4) 15
Number of ways of arranging 8 identical books into 4 identical shelves where any number of shelves may remain empty is equal to\\
(1) 18\\
(2) 16\\
(3) 12\\
(4) 15