

MCQOPTIONS
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1. |
A graph which has the same number of edges as its complement must have number of vertices congruent to ______ or _______ modulo 4(for integral values of number of edges). |
A. | 6k, 6k-1 |
B. | 4k, 4k+1 |
C. | k, k+2 |
D. | 2k+1, k |
Answer» D. 2k+1, k | |