## Discussion Forum

Que. | Let f(w, x, y, z) = ∑(0, 4, 5, 7, 8, 9, 13, 15). Which of the following expressions are NOT equivalent to f? |

a. | x'y'z' + w'xy' + wy'z + xz |

b. | w'y'z' + wx'y' + xz |

c. | w'y'z' + wx'y' + xyz + xy'z |

d. | x'y'z' + wx'y' + w'y |

Answer:x'y'z' + wx'y' + w'y |