Answer:
25 comes next
Explanation:
okay so when it says "position" it means the numbers place in the order, for example "4" in this case would be the in the second position and "16" in the fourth position.
to get 1 you do: 1*1 because 1 is the first number and it is in the first (1) position.
To get the second number (4) you do: 2*2 because two is the second number (it comes after 1) and it is in the second position.
For 9, you do 3*3; the pattern here is squares, 1^2=1 2^2=4, 3^2=9, 4^2=16.
If we follow that pattern we will get 5^2=25