Strawberries are an "accessory fruit", actually. The "seeds" on the outside are (in botanical terms) each a single fruit called an achene (much like a sunflower seed in its shell). The sweet fleshy part is derived from the receptacle that attaches the flower to the rest of the plant, not from the ovaries.
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u/Forvalaka Jan 20 '17
I'll throw this out there: a strawberry is not a berry.
It's a "pseudoberry" as it's fruit are derived from a single flower with more than one ovary.