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AMO 2027 Grades 4-5 SET 10 - Self-study Question 4

AMO · AMO 2027 Grades 4-5 SET 10 - Self-study

Question 4

What is the largest number of pieces you can obtain by cutting a round cake with only 4 straight cut?

A. 15

B. 18

C. 21

D. 24

E. None of the above

Answer entry: enter a number of pieces, not an option letter. The source does not specify flat versus spatial cutting; see the model notes in the solution.