UKMT Grey Kangaroo, 2025

Algebra Difficulty 1.0 Junior Find the answer United Kingdom

Eddie wants to write a number in each circle in the diagram. He wants each number to be equal to the sum of the numbers in the two adjacent circles. He has already written two numbers, as shown. What number should he write in the grey circle?

(A) $2$ (B) $-1$ (C) $-2$ (D) $-3$ (E) $-4$

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