Donald has nine one-day passes to Dizzyworld. He can go alone and use one, or he can take a friend and use two. If he visits every day until he uses all the passes, in how many different ways can he use them? Using a two day for four days and then going alone at the end (2,2,2,2,1) is different from reversing the order (1,2,2,2,2).

I don't know the answer to this question.

Question

16 November, 15:19

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Answers (2)

Know the Answer?

Nichols · Answer 1

(1,2,2,2,2), (2,1,2,2,2)

Observe, the 1 can go in 5 diff places

so 5 ways

Jaylah Jennings · Answer 2

There is 5 umbers in the sequence so the 1 can go in 5 different places