well that one is easy lol just get a geodude i don't know if that is spelt correctly but i hope you understand which one i am on about anyway yes that should have been simple as the gym leader number 3 is electic and what is weak against that type? rock lol so there you go lol
journey again to achieve the another battle called the 8th gym Pokemon ruby
Wattson the electric gym.
In the 8th gym. he is the gym leader
The Fourth Gym is in Lavaridge City.
The 6th Gym Leader In Pokemon Ruby Destiny is in Down Pour City
Pokemon ruby where is the 6 gym
two slaking and a vigoroth your best off using fighting types for this gym
A water Pokemon probably the water starter Mudkip
Mudkip because he can beat the types of most of the gym leaders
petalburg gym
its the petalburg gym and/or gym 5.
journey again to achieve the another battle called the 8th gym Pokemon ruby
Wattson the electric gym.
In the 8th gym. he is the gym leader
The town in which the third gym is in on Pokemon ruby is in Mauville City (or town, I don't know which one)
In Pokemon Sapphire, Ruby and Emerald the 7th Gym that's located in Mossdeep City has Psychic type Pokemon.
it is Mauville gym