00:01
There are 14 zingers and zingers are placed in packages of 4, 3 or 1.
00:09
The question is how many different ways can we package these 14 zingers? we can think of this question by classification.
00:26
So since there are 14 zingers, there can be at most 3 packages of 4.
00:37
So there can be three packages of four, two packages of four, one packages of four, and zero packages of four.
00:57
And if there are three packages of four, there cannot be packages of three, since three times four plus three equals 15, which is greater than 14.
01:18
And then the rest of two zingers are fueled by packages of one.
01:27
So this is one package of four, one package of four, one package of four, one package of four, one package of one.
01:40
So if there are two packages of four, there can be at most two packages of three.
01:56
And hence there can be one packages of 3 and 0 0 .3...