Possible combos are
9998888, 9999887, 9999986, 9999977, 9999995 and their rearrangements
For 9998888, 0 nos. r divisible by 11
9999995 ,0
9999986, there are broken up as (9+9+9+8)-(9+9+6)Hence 3*4=12 possibilities
9999887, (9998),(789) gives required set Hence 6*4=24 possibilities
for 9999977, 0 possibilities.
36 nos satisfy the 11 divisibility