数字推理3,4,6,9,( ),18

问题描述:

数字推理3,4,6,9,( ),18

3,4,6, 9(3×3),( 4×3=12),18(6×3)

13

3,4,6,9,( 13 ),18
3比4小1
4比6小2
6比9小3
9比13小4
13比18小5