rbliss3285 rbliss3285

07-01-2024
Mathematics

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Which summation is equal to S₂₀, the number of stitches in the first 20 rows of the shawl?

a) ∑n=1²⁰ n
b) ∑n=1¹⁹ n
c) ∑n=0¹⁹ n
d) ∑n=0²⁰ n

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