Divisibility by 11: If the difference between the sum of digits at odd places and the sum of digits at even places is either zero or divisible by 11, then the given number is divisible by 11.
Sum of digits at odd places = 8 + 5 = 13
Sum of digits at even places = 7 + 6 = 13
Difference between both the sums = 13 - 13 = 0
So, as the difference is zero, the number 7568 is divisible by 11.