Type the missing number. -25 -23 -22 -21

What do you think?

-24

-24 (fooooooooooool)

24 -24

To find the missing number in the sequence, we need to observe the pattern.

Here, we have a sequence of increasing numbers:
-25, -23, -22, -21.

We can notice that the numbers are increasing by 2 each time. Therefore, to find the missing number, we need to add 2 to the previous number in the sequence.

The previous number to -21 is -22. So, adding 2 to -22 gives us the missing number:

-25, -23, -22, -21.

Therefore, the missing number is -20.