Multiple choice general knowledge math & puzzles

"There were 2 tribes living on an island. The east tribal people always tell a lie. The west tribal people always tell the truth. Alan and Bryan came from the same tribe. However, we do not know which tribe they came from. When they were asked the marital status, Alan said: “Both of us are married.” But Bryan said: “I am not married”. Are they really married? "

  1. Both are unmarried

  2. Both are married

  3. Alan is married but Bryan is not.

  4. Bryan is married but Alan is not.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

If Alan is from the West (truth), Bryan must also be from the West. But their statements contradict, so they must be from the East (liars). Alan's lie means they aren't both married. Bryan's lie means he IS married. Thus, Bryan is married and Alan is not.