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The first three numbers on a certain list are 7, 8, and 9. Starting wi
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14 Mar 2022, 03:00
14 Mar 2022, 03:00
Expert Reply
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Question Stats:
76% (01:37) correct
23% (01:26) wrong based on 17 sessions
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The first three numbers on a certain list are 7, 8, and 9. Starting with the fourth number on the list, each number is the sum of the three that immediately precede it. If the nth number on the list is the first to exceed 200, what is the value of n?
(A) 7
(B) 8
(C) 9
(D) 10
(E) 11
(A) 7
(B) 8
(C) 9
(D) 10
(E) 11
Re: The first three numbers on a certain list are 7, 8, and 9. Starting wi
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14 Mar 2022, 10:34
14 Mar 2022, 10:34
Carcass wrote:
The first three numbers on a certain list are 7, 8, and 9. Starting with the fourth number on the list, each number is the sum of the three that immediately precede it. If the nth number on the list is the first to exceed 200, what is the value of n?
(A) 7
(B) 8
(C) 9
(D) 10
(E) 11
(A) 7
(B) 8
(C) 9
(D) 10
(E) 11
I got the solution through hard calculation, is there an way to sole it using equations or something
Re: The first three numbers on a certain list are 7, 8, and 9. Starting wi
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14 Mar 2022, 10:54
14 Mar 2022, 10:54
1
Expert Reply
OE
The fourth number and numbers after it will be: 24, 41, 74, 139, 254. The 8th number, 254, is the first to exceed 200.
The fourth number and numbers after it will be: 24, 41, 74, 139, 254. The 8th number, 254, is the first to exceed 200.
