In each case, determine the number of ways
(a) 10 identical candies must be distributed among 4children
(b) A 15-letter sequences must be made up of 5 A's, 5 B's and 5C's
(c) 10 identical rings must be placed on your 10 fingers
(d) 3 red, 3 green and 3 blue flags are to be arranged along thestreet for the parade
