If the numbers are 3, 6, 4, 8, 6, 12, 10 the answer options are 8, 12,18,20 dont know answer

Question

Unable to. Solve sequence 

Answer 1

The pattern that is going on here is as follows...

 

x2 , -2 , x2 , -2 , x2 , -2 ,...

 

The next step would then be to x2.

 

Thus, 10 x 2 = 20.

 

Your answer is 20.