Let \(\delta\) denote the minimum degree of a vertex in a graph. For all…

GATE · 2014 · CS · Set 3 · Computer Science & IT

Let δ\delta denote the minimum degree of a vertex in a graph. For all planar graphs on nn vertices with δ≥3\delta \geq 3, which one of the following is TRUE?

  1. A.

    In any planar embedding, the number of faces is at least n2+2\frac{n}{2}+2

  2. B.

    In any planar embedding, the number of faces is less than n2+2\frac{n}{2}+2

  3. C.

    There is a planar embedding in which the number of faces is less than n2+2\frac{n}{2}+2

  4. D.

    There is a planar embedding in which the number of faces is at most nδ+1\frac {n}{\delta+1}

Attempted by 232 students.

Sign up free to check your answer

Sign up free

Explore the full course: Gate Guidance By Sanchit Sir

Loading lesson…