Question

找规律填数11 9 5 4 7 9 2 8 13 8 3 () () 5 7 2

Answer 1

11+9=5*4

7+9=2*8

13+8=3*x x=7

y+5=7*2 y=9

所以11 9 5 4 7 9 2 8 13 8 3 (7) (9) 5 7 2