@Shubham Wadhwa 

Pretty interesting use case. Curious to know more on what specific insights does odd/even user id might give here, assuming it’s highly subjective to your product setup and user identification.

I don’t think it’s possible to do this accurately in the available filter operators since you can’t compute this logic on the fly.

You can use the Derived properties route and try to see if operations are allowed on the user ID values. If allowed, then you can create a derived flag saying is_even/odd : true/false and use this as event filters.