সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
If 3a +5b = 10 and 5a + 3b = 30, what is the average (arithmetic mean) of a and b?
If 3a +5b = 10 and 5a + 3b = 30, what is the average (arithmetic mean) of a and b?
- ক. 4
- খ. 2.5
- গ. 3.5
- ঘ. 4.5
সঠিক উত্তরঃ 2.5
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