Find the next term in the series: 15, 18, 16, | vedclass

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Question

(D) The given series is an alternating series consisting of two interleaved sequences.Sequence $1$: $15, 16, 17, ...$Here,each term increases by $1$ (

Vedclass · Accepted Answer

$18$

Vedclass · Answer

(D) The given series is an alternating series consisting of two interleaved sequences.Sequence $1$: $15, 16, 17, ...$Here,each term increases by $1$ ($15 + 1 = 16$,$16 + 1 = 17$,$17 + 1 = 18$).Sequence $2$: $18, 19, 20, ...$Here,each term increases by $1$ ($18 + 1 = 19$,$19 + 1 = 20$).The series follows the pattern: $15 (+3), 18 (-2), 16 (+3), 19 (-2), 17 (+3), 20 (-2), ?$Following the pattern,the next term after $20$ is $17 + 3 = 20$ (if continuing sequence $1$) or $20 - 2 = 18$ (if continuing sequence $2$).However,looking at the alternating pattern: $15, 18, 16, 19, 17, 20, 18$.The next term is $18$.

$848$	$420$	$206$	$99$	$45.5$
$664$	$(A)$	$(B)$	$(C)$	$(D)$	$(E)$

Find the next term in the series: $15, 18, 16, 19, 17, 20, ?$

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Observe the following table and determine which number will come in place of $(D)$:
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