heidic44 heidic44
  • 18-05-2019
  • Mathematics
contestada

What is ? In the following series? 3, -6, 12, 4, 20, ?

Respuesta :

07alexpm
07alexpm 07alexpm
  • 18-05-2019

Answer:

13

Step-by-step explanation:

3-9=-6       -9        

-6+18=12   +18

12-8=4       -8

4+16=20   +16

20-7=13    -7

              +14

               -6  

             +12

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