Select the option fo "?" That continues the pattern in each question.

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

The sixth number in series is 13.

Step-by-step explanation:

Given series : 3, - 6, 12, 4, 20,?

The pattern followed by the series is:

The first number = 3

Second number = 3 - 9 = - 6

Third number = - 6 + (9 * 2) = - 6 + 18 = 12

Fourth number = 12 - 8 = 4

Fifth number = 4 + (8 * 2) = 20

Sixth number = 20 - 7 = 13

Seventh number = 13 + (7 * 2) = 13 + 14 = 27 and so on.

So as per the above pattern, the sixth number in the series is 13.