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warriorguy
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Location: India
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Posts: 376
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In the finite sequence of positive integers \(K_1\), \(K_2\), \(K_3\), ..., \(K_9\), each term after the second is the sum of the two terms immediately preceding it. If \(K_5 = 18\), what is the value of \(K_9\) ?
(1) \(K_4 = 11\)
(2) \(K_6 = 29\)
(1) \(K_4 = 11\)
(2) \(K_6 = 29\)
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Posts: 240
K1 K2 K3 K4 K5 K6 K7 K8 K9
K5 = K4 + K3 = 18
K9 = K7 + K8 = ?
Statement 1: K4 = 11
Using K4 and K5 we can find K6, then K7 and so on.
This statement is sufficient.
Statement 2: K6 = 29
Using K5 and K6 we can find K7, then K8 and so on.
This statement is sufficient.
Answer is D
K5 = K4 + K3 = 18
K9 = K7 + K8 = ?
Statement 1: K4 = 11
Using K4 and K5 we can find K6, then K7 and so on.
This statement is sufficient.
Statement 2: K6 = 29
Using K5 and K6 we can find K7, then K8 and so on.
This statement is sufficient.
Answer is D
Posts: 249
Ans D.
k 5 = 18 --> k4 + k3 = k5
1) K 4 = 11
K4 +K3 = K5--> k3 = 18 -11
SUFF
2) K 6 = 29
K 6 = K5 + K 4
29 = 18 + K 4
K 4 = 11
SUFF
Ans D.
k 5 = 18 --> k4 + k3 = k5
1) K 4 = 11
K4 +K3 = K5--> k3 = 18 -11
SUFF
2) K 6 = 29
K 6 = K5 + K 4
29 = 18 + K 4
K 4 = 11
SUFF
Ans D.
Posts: 160
warriorguy
k5=18
k9=?
(1) k4=11
k5=k4+k3
18=11+k3
k3=7
Therefore sufficient
(2) k6=29
k6=k5+k4
29=18+k4
k4=11
Therefore sufficient.
These statements are sufficient because we can use to previous two values to find the values of the next term and carry on with the process to find the value of k9.
D
Schools: Kellogg (A)
Posts: 65
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