Frogs or Toads?
Four amphibians, Brian, Chris, LeRoy, and Mike live together in this swamp, and they make the following statements:
- Brian: "Mike and I are different species."
- Chris: "LeRoy is a frog."
- LeRoy: "Chris is a frog."
- Mike: "Of the four of us, at least two are toads."
How many of these amphibians are frogs?