Any number in the series 1 3 7 15 31 63 can be expressed in terms of the
number preceding it. If x is a number in the series, what must the number be?

Question

Any number in the series 1 3 7 15 31 63 can be expressed in terms of the 
number preceding it. If x is a number in the series, what must the number be?

anonymous · Answer

127 63x2+1 if thats what you are trying to find

anonymous · Answer

i dont know i just copy a test

mathmale · Answer

Sorry, Brian.  If this problem comes from a test, you may not ask for help here on OpenStudy for such a question.  You may request all the help you want with practice HW problems, hopefully before you take the actual test.   Secondly, if this is the first time you're seeing this kind of problem (predicting a number in an arithmetic series), it's too late.  Come back after the test is over, when you're no longer under pressure, and I'd then be happy to get you started on arithmetic and geometric series.

anonymous · Answer

your asking for these answers while in the middle of a test?

anonymous · Answer

no the test is tomorrow

anonymous · Answer

oh well then its pretty much hw