Correct Answer: 2

Solution :

if you look at first 2 equations logic

(7+9)-11 = 5

Eq:2

(3+2)-1= 4

so by using same logic

(4+8)-10=2️⃣

Correct answer is 2

• First of all, fish can’t drown and hey can’t swim away
• 3 dead fish are floating.

So…all  10 fish are still left in the tank!