Question

1+4=5
2+5=12
3+6=21
8+11=?​

Answer 1

Answer:

$\frak{1 + 4 = 5 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }\\ \frak{2 + 5 = 12 - - - - (2 + 5 + 5) } \\ \frak{3 + 6 = 21 - - - - (3 + 6 + 12)}$

We see that in each case preceding total is added to succeeding total .

$\frak {\therefore \: 8 + 11 = 40 - - - - (8 + 11 + 21)}$

Answer 2

Step-by-step explanation:

1 + 4= 5 ( add this two no then u get 5)

2+5 =12 ( add upper 1 line no 1+4+2+5 then u get 12)

3+6 =21( add second line number 1+4+2+5+3+6 u get 21)

then

to find, 8+11=?

To find the answer, you have to add the question of the all number. (1+4+2+5+3+6+8+11 then u get 139)

your answer will be 139

(1+4=4

2+5=12

3+6=21

8+11=139)