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
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. Hence the father's present age is--
- Son's age is now one-third of father's age. In twelve years from now son's age will be one-half of father's age. What is the son's age in years now?
- Harun is twice as old as Jasim, who is three uears older than Dina. If Harun's age is five times Dina's age, how old in years is Jasim?
- A father's age is 4 times his son's now. 20 years from now, the father's age will be double his son's age. What will be the son's age 10 years from now?
- The sum of the ages of the son and father is 120 years. The father's age is 3 times than that of the son. What is the age of father?
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