Question 1039531
7,16,8,27,9,? my question is whats the next number ? my thinking was it increases by 10-1 then up 20-1 so the answer should be up 30-1 would be 29 but that's not an option.. Help please 
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7,2^4,2^3,3^3,3^2, ? 
? = 4^2 = 16
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Cheers,
Stan H.
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