সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
The average of a, b, c is 6 and a - b = 4, ab = 21, what is the value of c?
The average of a, b, c is 6 and a - b = 4, ab = 21, what is the value of c?
- ক. 6
- খ. 7
- গ. 8
- ঘ. 9
সঠিক উত্তরঃ 8
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