## Discussion Forum

Que. | X, Y and Z are closed intervals of unit length on the real line. The overlap of X and Y is half a unit. The overlap of Y and Z is also half a unit. Let the overlap of X and Z be k units. Which of the following is true? |

a. | k must be 1 |

b. | k must be 0 |

c. | k can take any value between 0 and 1 |

d. | None of the above |

Answer:None of the above |