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09 Apr 2017, 09:23
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D
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Difficulty:
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Question Stats:
81% (01:17) correct
19%
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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) \(K_6 = 29\)
17 Apr 2017, 14:49
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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
10 Oct 2017, 12:03
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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.
