1. The problem is to evaluate the expression $4+2 \times 3 - 1$ using BODMAS rules. 2. BODMAS stands for Brackets, Orders (powers and roots), Division and Multiplication (from left to right), Addition and Subtraction (from left to right). 3. According to BODMAS, multiplication comes before addition and subtraction. 4. First, calculate the multiplication part: $2 \times 3 = 6$. 5. Substitute back into the expression: $4 + 6 - 1$. 6. Now perform addition and subtraction from left to right: - $4 + 6 = 10$ - $10 - 1 = 9$ 7. Therefore, the value of the expression is $9$.