Addition (+) ○◂｜appendage｜___｜20260628155835-01-•

3 + 2 = 5 with apples, a popular choice in textbooks¹

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Footnotes

1. Enderton (1977), p. 138: “…select two sets K and L with card K = 2 and card L = 3. Sets of fingers are handy; sets of apples are preferred by textbooks.” ↩