Question

1+4=5

2+5=12

3+6=21

8+11=?

 

Answer 1

Qui luật: a + b = a . b + a

Ta có: 8 + 11 = 8 . 11 + 8 = 88 + 8 = 96

Answer 2

8+11=19

Answer 3

1 + 4 = 5

2 + 5 = 7

3 + 6 = 9

8 + 11 = 19 .

Answer 4

1+4=1+(4.1)=5

2+5=2+(5.2)=12

...

=>8+11=8+(11.8)=96