Sequence

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Source: — Data Sufficiency |

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hmm

by JeffB » Mon Sep 07, 2009 1:01 pm
I can't read it :(

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by praky_rules » Wed Sep 09, 2009 4:05 pm
1 Xi=Xi-1 /2 does nt tell you what X1 is
2.X5=X4/(X4+1) - I hope I am reading this right...No good stand alone.

combining the two...X5=X4/2 so X4=0 or 1..but all Xi are positive numbers...so X4 = 1 and so X1 is known

C