Which one of the following graphs is NOT plannar?

G1:

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G2:

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G3:

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G4:

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Solution

The correct option is A G1:
$G_{1}$ is same as $K_{3, 3}$ which is known to be non planar. $G_{2}, G_{3} and G_{4}$ can be redrawn as follows so that they are planar.

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Similar questions

With reference to “Green Planner”, which one of the following statements is correct?

"ग्रीन प्लानर" के संदर्भ में निम्नलिखित में से कौन सा/से कथन सत्य है/हैं?

y = f (x)

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