Permutations and Combinations

Question

All possible numbers are formed using the digits
1, 1, 2, 2, 2, 2, 3, 4, 4 taken all at a time. The number
of such numbers in which the odd digits occupy
even places is :

Accepted Answer

Option D. For those three odd digit numbers 1, 1, 3 we can choose any three positions out of the four even positions.

More on Permutations and Combinations

Permutations and Combinations

More on Permutations and Combinations