aubreywolfe4935 aubreywolfe4935 26-03-2024 Mathematics contestada Let Sₙ be the sum to n-terms of an arithmetic progression 3, 7, 11, ... ₙIf 40 < (6/n(n+1) ∑ Sₖ) < 42, then n equals ____. ᵏ⁼¹