jpepep jpepep
  • 24-04-2016
  • Mathematics
contestada

1+4=5 2+5=12 3+6=21 8+11=?

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abineya4
abineya4 abineya4
  • 24-04-2016
40. This is because:
1+4= 5. 
2+5= 7. Now you must take the 5 from the previous answer and add it to your new answer, which then gives you 12.
Now 3+6=9. Take 12 and add it to 9, which will give you 21. Follow the pattern to get the next answer, which is 40.
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