okok Created this joke myself...

doramon got how many siblings??

Ans: 9

2 pairs of them are clone.( one of them is doramon)
so name all the siblings name.

Ans: do ra mi fa so la ti Do ho HO
so is doramon
raramon
miramon
faramon
soramon and so on

the clones are doramon Doramon and horamon HOramon

haha lame right