সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
The average mark obtained by 15 students was 10 and the average mark obtained by 10 students was 15. What was the average mark obtained by all students?
The average mark obtained by 15 students was 10 and the average mark obtained by 10 students was 15. What was the average mark obtained by all students?
- ক. 10
- খ. 8
- গ. 12
- ঘ. 15
সঠিক উত্তরঃ 12
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- Francis had an average of 75 on her first four Geometry test. After taking the next test her average dropped to 72. How much did she get in fifth test?
- If a mark of 76 or higher represents A grade, what is the nearest percentage of students who receive an A?
- The average of a, b, c is 6 and a - b = 4, ab = 21, what is the value of c?
- In a class of 22 students, 21 students get an average of 44 marks. If the remaining students get 66 marks, the average marks of the whole class is--
- Sum of P and Q is 72 and the value of R is 42. What is the average of P, Q and R?
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