Question

Please tell me te answer of this complicated Question​

Answer 1

Answer:

80

Step-by-step explanation:

if we consider the 1st,3rd,5th, and 7th term u can see a decrease of 2 that is 89,87,85,83

and if we consider the 2nd 4th and 6th tera then u can see a increase of 2 that is 78,?,82

So if u replace ? with 80 then u will get the correct series