MCQ Practice Mathematics 📖 কোন শর্তে log_{a}^{1} = 0? Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up This question appeared in BCS 40th Preliminary Question Bank Quiz and Solution Mathematical Reasoning 2019 Question 19 BCS 40th Preliminary Question Bank Quiz and Solution Mathematical Reasoning 2019 Question 19