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# Counting methods # 23

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Manager
Joined: 24 Jun 2003
Posts: 91
Location: Moscow
Followers: 1

Kudos [?]: 1 [0], given: 0

Counting methods # 23 [#permalink]  11 Aug 2003, 06:52
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (00:06) wrong based on 1 sessions
In how many different way a gardener could make planting of ten trees in three days if he should make at least one tree planting a day?
Manager
Joined: 10 Jun 2003
Posts: 210
Location: Maryland
Followers: 2

Kudos [?]: 5 [1] , given: 0

1
KUDOS
Konstantin Lynov wrote:

If he plants 8 the first day, then he is stuck with 1 the second day, and one the third day...

If he plants 7 the first day, then he could do one the second and two the third or two the second and one the third.

I modelled this by:
811
712
721
613
631
622

Do you see the same pattern that I see..?
Manager
Joined: 10 Jun 2003
Posts: 210
Location: Maryland
Followers: 2

Kudos [?]: 5 [0], given: 0

1+2+3+4+5+6+7+8 = 36 (assuming the order that he plants the trees within a given day does not matter)
Manager
Joined: 24 Jun 2003
Posts: 91
Location: Moscow
Followers: 1

Kudos [?]: 1 [0], given: 0

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