Idilla, L., Satyahadewi, N. and Martha, S. 2025. Comparison of Single Net Premium of Unit Linked Endowment Life Insurance using Annual Ratchet Method and Black Scholes Model. Pattimura International Journal of Mathematics (PIJMath). 4, 2 (Nov. 2025), 73-86. DOI:https://doi.org/10.30598/pijmathvol4iss2pp73-86.