Question

options : 53, 70, 69, 90​

Answer 1

Answer:

53

Explanation:

(13-11)=2+1=3.

11=1+1=2.

Which is 32.

Again, (14-12)=2+1=3.

14=1+4=5.

Which is 35.

Again, (21-17)=4+1=5,

And 21=2+1=3 ,

Which is 53.