1By KS Teng In JC MathematicsPosted September 9, 2015Things you might want to know for conjecture1. is always even while is always odd. 2. series, 1, 2, 6, 24, 120, 720, … Be comfortable withholding and subtracting 1 from it too, for example 2, 3, 7, 25, 121, 721. 3. APGP Series. 4. [...] READ MORE