Select the option for “?” that continues the pattern in each question.

Question

i'm no to sure where to start with these pattern. If they were in an ordinary descending or ascending order it'd be easier. There's a pattern here, What would be the next number after 20? Can anyone assist please

3, -6, 12, 4, 20, ?

Answer 1

First of all, there exist an infinitely many functions for which $f(1)=3, f(2)=-6, f(3)=12, f(4)=4, f(5)=20$. Mathematically, any of those functions could define the "pattern" you seek.

The answer you are looking for is probably this: https://www.quora.com/What-is-the-next-term-of-the-series-3-6-12-4-20-___