What's the next number?

Number Theory Level pending

12,30,56,40,90,132


The answer is 84.

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1 solution

Zhaochen Xie
Mar 25, 2015

3+4+5=12 5+12+13=30 7+24+25=56 8+15+17=40 9+40+41=90 11+60+61=132

so the next number would be 12+35+37=84

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