do all states have the same number of rights in their constitutions

Answer 1

No.

http://en.wikipedia.org/wiki/State_constitution_(United_States)

Answer 2

No. States may list additional "rights", but the U.S. Constitution applies in ALL 50 states, so the states may not deny "rights" specified in the U.S. Constitution.

Answer 3

And, states do not have to re-state rights enumerated in the U.S. Constitution.