What comes next in the sequence -
5210 - 0125 = 5085; 8550 - 0558 = 7992; 9972 - 2799 = 7173; 7731 - 1377 = 6354; 6543 - 3456 = 3078;
???? - ???? = ????
Answer: 8730-0378=8352
The correct answer should be: 3780-0873=2907.