Math 6 Tuesday, October 14, 2025 · Shariful Islam Zinna live math quiz বীজগণিত :- লগারিদম:(পৃষ্ঠা নং৬৭৪-৬৮৮) 15 Serial No,Question,Correct Answer,Wrong Option 1,Wrong Option 2,Wrong Option 3,Explanation 1,"lnx এর ক্ষেত্রে নিচের কোনটি সঠিক?","x>0","x_>0","x<0","x_<0","" 2,"3log2+log5=??","log40","log20","log60","log12","" 3,"log₂64+log₂8 এর মান কত??","9","128","7","2","" 4,"5log3-log9=কত??","log27","log8","log3","log4","" 5,"log₃9= কত??","2","b-7","5","3","" 6,"32এর 2 ভিত্তিক লগারিদম কত??","5","7","-7","3","" 7,"log√3 81 এর মান কত??","8","6","5","4","" 8,"log√6 216","6","8","10","16","" 9,"যদি log (x+2)=logx+ log 2 হয়,তাহলে x=","2","3","4","5","" 10,"log₁₀x=3 হলে x-এর মান কত??","1000","1002","1004","10000","" 11,"log₅x=3 হলে x= কত??","125","225","375","120","" 12,"log2+log4+ log8+......ধারাটির প্রথম ১০ টি পদের সমষ্টি কত??","55 log 2","45 log11","36 log 11","66 log 11","" 13,"যদি logₙ2= a এবং logₙ5= b হয়,তাহলে logₙ50=?","a+2b","a+b","a+b2","ab2","" 14,"logₐb× logbₐ=কত??","1","ab","a+b","2","" 15,"log₂√₅ 400= x হলে x এর মান কত??","4","7","5","3","" 16,"logₓ9=2 হলে x এর মান কত??","3","3√3","√3","2",""