According to Wittgenstein's Finite Rule Paradox every finite sequence of numbers can be a described in infinitely many ways and so can be continued any of these ways - some simple, some complicated but all equally valid. Conversely, it is possible to find a rule such that any number of your choice can be the next one.
The simplest solution is based on the following polynomial of order 3
Un = (1*n3 - 9*n2 + 8*n + 246)/2 and, accordingly, the next term would be 93. Note, however, that the sequence continues so this number does not complete the sequence.
The IRS website is obviously a could place to check since they're the ones who make the rules. There's a decent FAQ on IRA that you read here: http://www.irs.gov/retirement/article/0,,id=111413,00.html I also found a decent article on about.com: http://retireplan.about.com/od/iras/a/ira-withdrawal.htm. This should be enough to get you on the right track.
72
difference decreases by 1 each time
9 = 107 - 98
8 = 98 - 90
7 = 90 - 83
6 = 83 - 77
5 = 77 - 72
4 = 72 - 68
3 = 68 - 65
18 18. 3+1=4 4+2=6 6+3=9 9+4=13 13+5=18
93
91
81
85
The number which best completes the sequence below is:2 9 5 13 10 19 17?
The number which best completes the sequence below is: 2 9 5 13 10 19 17 ?
The number which best completes the sequence below is:1 1 3 2 4 6 5 25 ?
We can't answer this accurately without knowing the sequence.
7
77040
== ==
27. But that continues the sequence, it does not complete it.
27
25
It is: 10-3 = 7
The number which best completes the sequence below is 20 5 30 6 42 7