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AMC 10B 2007 #20 — 5×5 Grid 3 Blocks No Two Same Row/Column

1800SpecialistCombinatoricsCounting Principles

AMC 10B · 2007 · Problem 20

A set of $25$ square blocks is arranged into a $5 \times 5$ square. How many different combinations of $3$ blocks can be selected from that set so that no two are in the same row or column?

Answer choices

A
100
B
125
C
600
D
2300
E
3600
0 students attempted0% solvedRating 1800

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