Frogs or Toads?

In a magical swamp, there are two species of talking amphibians: toads whose statements are always true, and frogs whose statements are always false.

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?


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