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akhil_o (2709)

Blazing goIITian

Olaaa!! Perrrfect answer. 435  [702 rates]

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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
 this reply: 5 points  (with Olaaa!! Perrrfect answer.   in 1 votes )   [?]
 
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