bonanova Posted July 15, 2014 Report Share Posted July 15, 2014 The sequence S1, S2, S3, ... , S10 has the property that every term after the second is the sum of the previous two. That is, Sn = Sn-2 + Sn-1 for n > 2. Suppose that S9 = 110 and S7 = 42. What is S4? Quote Link to comment Share on other sites More sharing options...
0 nana77 Posted July 15, 2014 Report Share Posted July 15, 2014 Fun s4 = 10. solve s8 as s9-s7. then flow back from there as s6=s8-s7 and so forth. s1 was 2 and s2 was 4. Quote Link to comment Share on other sites More sharing options...
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bonanova
The sequence S1, S2, S3, ... , S10 has the property that every term after the second is the sum of the previous two.
That is, Sn = Sn-2 + Sn-1 for n > 2.
Suppose that S9 = 110 and S7 = 42.
What is S4?
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