সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন
Which number should come next in the series: 1,3,6,10,15?
Which number should come next in the series: 1,3,6,10,15?
- ক. 18
- খ. 20
- গ. 21
- ঘ. 25
সঠিক উত্তরঃ 21
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