Discover the Missing Number in the Series: 10, 9, 60, 90, 70, 66, ?

[it.anoopk]

10, 9, 60, 90, 70, 66, ?

 

[HallsofIvy]

What reason do you have to think that there is a unique way to continue this?

 

[Gib Z]

May not be a unique way, but I think he just wants the simplest or any way. Either way it stumps me.

 

[HallsofIvy]

Well, if he want any way, 7 will do fine!

Hmm, I do notice that today is April 1.

 

[mathman]

Try the sequence 14,23,28,34,42,? At least it has an answer (particularly for NYC residents).

 

[robphy]

um...
..., 96, 10000000000, 10000000000000

 

[christianjb]

This is an old problem. Here's the answer

10, 9, 60, 90, 70, 66, 314, Kermit, 7, 2, 2, 19, 43, Wyoming, 14343, 22, 43, 44, 1.654342, the Larch, 22, 23, 24, 0, 5, ...

The pattern should now be obvious.

 

[Gib Z]

Is this a big april fools joke to make us try our hardest to find a pattern and waste our time?

 

[robphy]

It's a real series: http://www.research.att.com/~njas/sequences/A052196

ten
nine
sixty
ninety
seventy
sixtysix
ninetysix
tenbillion
tentrillion

 

[Gib Z]

Good spot! Though not of much interest to me mathematically, this series..