## Discussion Forum

Que. | The 2^n vertices of a graph G corresponds to all subsets of a set of size n, for n >= 6 . Two vertices of G are adjacent if and only if the corresponding sets intersect in exactly two elements. The number of vertices of degree zero in G is: |

a. | 1 |

b. | n |

c. | n+1 |

d. | 2^n |

Answer:n+1 |