MCQ Practice Mathematics বাংলাদেশ পরিসংখ্যান ব্যুরোর (BBS) জুনিয়র পরিসংখ্যান সহকারী নিয়োগ পরীক্ষা-২০২০ 📖 a : b = 4 : 7 এবং b : c = 5 : 6 হলে a : b : = কত? ক 20 : 35 : 24খ 20 : 35 : 42গ 24 : 25 : 30ঘ 4 : 7 : 6 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 bbs Junior Statistical Assistant Recruitment Question Bank 2020 Question 51 bbs Junior Statistical Assistant Recruitment Question Bank 2020 Question 51 bbs Junior Statistical Assistant Recruitment Question Bank 2020 Question 51 Previous(a + b) = 3, (a - b) = 2 হলে ab =? Nexta + b = 5, a-b = 3 হলে ab = ?
