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What is the 20th number in the sequence 3, 6, 12, 24, 48, ?
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16 Mar 2022, 02:00
16 Mar 2022, 02:00
Expert Reply
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Question Stats:
84% (01:08) correct
16% (00:49) wrong based on 25 sessions
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What is the 20th number in the sequence 3, 6, 12, 24, 48, …?
Indicate all that apply
\( 2 × 3^{20}\)
\(3 × 2^{20}\)
\( 3 × 2^{19}\)
\( 3^{19}\)
Great Opportunity To Earn Kudos!!!
GRE Quantitative Reasoning Daily Challenge - (2022) EDITION
Indicate all that apply
\( 2 × 3^{20}\)
\(3 × 2^{20}\)
\( 3 × 2^{19}\)
\( 3^{19}\)
Great Opportunity To Earn Kudos!!!
GRE Quantitative Reasoning Daily Challenge - (2022) EDITION
Re: What is the 20th number in the sequence 3, 6, 12, 24, 48, ?
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16 Mar 2022, 11:17
16 Mar 2022, 11:17
1
From 2nd term in the sequence it's multiplying 1st term by 2 i.e.
2nd term = 3 * 2 = 6 (one 2)
3rd term = 3 * 2 * 2 = 12 ( two 2)
4th term = 3 * 2 * 2 * 2 = 24 (three 2)
Hence 20th term will be = 3 * 2^19 (nineteen 2) , option C
2nd term = 3 * 2 = 6 (one 2)
3rd term = 3 * 2 * 2 = 12 ( two 2)
4th term = 3 * 2 * 2 * 2 = 24 (three 2)
Hence 20th term will be = 3 * 2^19 (nineteen 2) , option C
gmatclubot
Re: What is the 20th number in the sequence 3, 6, 12, 24, 48, ? [#permalink]
16 Mar 2022, 11:17
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