if N=a0a1a2a3a4........a99 and M= a99a98a97.....a3a2a1 then what is with the divisibility ofmod of (N-M) (my cat was on 4th November and this was in paper...please solve it)

1) is divisible by 9 but not necessarily by 111
2) is divisible by 9 but not necessarily by 11
3) s divisible by 9 but not necessarily by 99
4) divisibility of such no.s can't be predicted

• 1) is divisible by 9 but not necessarily by 111
• 11 years agoHelpfull: Yes(0) No(0)