[amp_mcq option1=”678″ option2=”769″ option3=”824″ option4=”937″ correct=”option1″]
The missing character is 512.
The sequence is a simple alternating addition and subtraction of 13, starting with 512.
512 + 13 = 525
525 – 13 = 512
512 + 13 = 525
525 – 13 = 512
The pattern continues indefinitely.