I have 8 identical pieces of watermelon candy and 7 identical pieces of strawberry candy. Find the number of ways I can distribute this candy to 4 children.
[8 + 4 - 1] C [4 -1] =11C3 = 165 ways of distributing 8 watermelon candy
[7 + 4 - 1] C [4 - 1] =10C3 =120 ways of distributing 7 strawberry candy
Total number of ways= 165 x 120 =19,800 ways.