>>11592119black -> white rotate by 90 degree anticlockwise
white -> white flip
white -> black rotate by 90 degree clockwise
then there is obviously the 3 ->4 ->5. So the answer is 5 dots, rotated anticlockwise back to the original place there the 3 dots were in the first part of the sequence. Answer is 4.
Alternatively there is no black->black sequence which would have been taken as yet another flip, which gives 1 as an answer.
Answer is 4 if there is no black -> sequence (white dots ends the sequence after black) and it is 1 if the black-> black sequence is same as white ->white. I am leaning on 4 because on the upper 2 sequences, there are 2 white sections and only one black section, so I expect that the same will be true for the last one.