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Step2247 [10]
3 years ago
11

6 , 12 , 20 , 30 , 42 , 56 , 72 , . . .

Mathematics
1 answer:
valentina_108 [34]3 years ago
4 0
The next number would be 90.

Explanation: 6+6=12
12+8=20
20+10=30
30+12=42
42+14=56
56+16=72

You keep adding two every time. So you would then do 72+18=90.

Hope this helps! :)
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