1. The problem asks to write the ratio of binders to notebooks. 2. We are given 12 notebooks and 11 binders. 3. The ratio of binders to notebooks is written as \(\frac{\text{binders}}{\text{notebooks}}\). 4. Substitute the given values: \(\frac{11}{12}\). 5. Since 11 and 12 have no common factors other than 1, the ratio is already in simplest form. 6. Therefore, the ratio of binders to notebooks is \(\boxed{\frac{11}{12}}\).