সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
The average age of 12 students is 20 years. If the age of one more student is included the average decreases by 1, what is the age of the new student?
The average age of 12 students is 20 years. If the age of one more student is included the average decreases by 1, what is the age of the new student?
- ক. 5
- খ. 7
- গ. 9
- ঘ. 11
সঠিক উত্তরঃ 7
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