সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
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?
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?
- ক. 20
- খ. 30
- গ. 25
- ঘ. 10
সঠিক উত্তরঃ 20
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