Maths Olympiad Prep

Library / CEMC Pascal /384 of 603

CEMC Pascal, 2010

Combinatorics Difficulty 2.0 Junior Find the answer Canada

The nine interior intersection points on a 4 by 4 grid of squares are shown. How many interior intersection points are there on a 12 by 12 grid of squares?

(A) 100100 (B) 121121 (C) 132132 (D) 144144 (E) 169169

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