posted by DANIELLE on .
Use inductive reasoning to predict the next Number in each sequence.
1.3,7,11,15... i figure this to be 19 because each number following the first is a difference of 4.
2. 1,-2,4,-8 this is abit difficult for me. I am guessing the answer tobe 10. I cant'even explain how I ARRIVE AT 10 IF IT IS CORRECT CAN YOU HELP PLEASE? Thanks much
First is right.
On the second, multiply the last number by -2.