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In the sequence a1, a2, a3, …, an,an=an−1+an−2. If a1=1 and a2=1, whic
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06 Apr 2018, 05:11
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In the sequence \(a_1\), \(a_2\), \(a_3\), …, \(a_n\), \(a_n=a_{n−1}+a_{n−2}\). If \(a_1=1\) and \(a_2=1\), which of the following correctly expresses the first 5 terms of the sequence? A. 1, 1, 2, 3, 4 B. 1, 1, 2, 3, 5 C. 1, 1, 2, 3, 6 D. 1, 1, 2, 4, 8 E. 1, 2, 3, 4, 5
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Math Expert
Joined: 02 Sep 2009
Posts: 47206

Re: In the sequence a1, a2, a3, …, an,an=an−1+an−2. If a1=1 and a2=1, whic
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06 Apr 2018, 05:14
Bunuel wrote: In the sequence \(a_1\), \(a_2\), \(a_3\), …, \(a_n\), \(a_n=a_{n−1}+a_{n−2}\). If \(a_1=1\) and \(a_2=1\), which of the following correctly expresses the first 5 terms of the sequence?
A. 1, 1, 2, 3, 4 B. 1, 1, 2, 3, 5 C. 1, 1, 2, 3, 6 D. 1, 1, 2, 4, 8 E. 1, 2, 3, 4, 5 Check NEWEST addition to Ultimate GMAT Quantitative Megathread: 'Sequences Made Easy  All in One Topic!'
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New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
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Re: In the sequence a1, a2, a3, …, an,an=an−1+an−2. If a1=1 and a2=1, whic &nbs
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