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AMC 12 2024a Problem 22

  • Paper

The figure below shows a dotted grid 88 cells wide and 33 cells tall consisting of 1′′×1′′1''\times1'' squares. Carl places 11-inch toothpicks along some of the sides of the squares to create a closed loop that does not intersect itself. The numbers in the cells indicate the number of sides of that square that are to be covered by toothpicks, and any number of toothpicks are allowed if no number is written. In how many ways can Carl place the toothpicks?

size(6cm);
for (int i=0; i<9; ++i) {
draw((i,0)--(i,3),dotted);
}
for (int i=0; i<4; ++i){
draw((0,i)--(8,i),dotted);
}
for (int i=0; i<8; ++i) {
for (int j=0; j<3; ++j) {
if (j==1) {
label("1",(i+0.5,1.5));
}}}

(A) 130(B) 144(C) 146(D) 162(E) 196\textbf{(A) }130 \textbf{(B) }144 \textbf{(C) }146 \textbf{(D) }162 \textbf{(E) }196

Dataset text AMC 12 2000 to 2025. Quoted with source.

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C

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