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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