1. in this puzzle u have to tell me which will be next number?

1,11,21,1211,111221,..............

2.if a cat can catch one mouse in one room in one minute,,to catch 30 mouse in the same room how many cats are needed?

3.gizi the gangster is very scary guy..allthough inspector eagle hasn"t seen him..not even a picture....though one day he got the information that he"s in the hotel status..in room no.109...inspector went there.....there were many people.... as i said inspector never saw gizi...but he caught him..how??