### Brain Teasers

# Sisters

If only one of these statements is true, how many sisters have I got?

1.) "I've got ten or more sisters."

2.) "I've got less than ten sisters."

3.) "I've got at least one sister."

1.) "I've got ten or more sisters."

2.) "I've got less than ten sisters."

3.) "I've got at least one sister."

### Answer

None. If statement 3 is true, then statement 1 can also be true, and vice versa. Statement 2 can be true by itself, but only if I have no sisters.Hide Answer Show Answer

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## Comments

Nice teaser! Your teasers have all been pretty good so far, and I'm looking forward to a longer logic puzzle from you, because I bet it'll be a doozy!

Thanks

This was really easy, but still fun.

i thougt it woz 1 good teaser though

Fun, but 2 can still work. The puzzle says "How many sisters do I have?" Why can't it be none?

Drakar, I really don't understand what you are asking. Only one statement can be true. The only statement that can be true while the other two are false is statement 2 and that only occurs when there are no sisters.

Good teaser. Not too hard but it did make me think about it.

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