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‘I’ve always had bad grades in math but I’m good at planning recursions, W Freya Holmr FreyaHolmer You know things, you didn’t know you knew. Summation (capital sigma) 3n sum 0; for ( n0; n4; n ) sum 3n; Product (capital pi) n0 4 II 2n n1 prod 1; for ( n1; n4; n ) prod 2n; 7:51 PM 11 Sep 21 Twitter Web App