### Brain Teasers

# Which is True?

Which of the following statement(s) is/are true?

A: There is only one true statement.

B: "A" is telling the truth.

C: "B" is lying.

D: This statement is true.

A: There is only one true statement.

B: "A" is telling the truth.

C: "B" is lying.

D: This statement is true.

### Answer

"C" and "D""A" cannot be truthful, because that would result in "B" being truthful also, which would result in two true statements. "A" must be lying, so "B" must be lying also. If "B" is lying, then "C" is telling the truth. So far, there is one true statement, C. "D" can be true or false, but if it is false, then there is only one true statement, which results in "A" being true, which contradicts everything. "D" has to be true, so the two true statements are "C" and "D".

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