allery3, 8, 13, __, 23, 28-ত খালী ঠাই পূৰণ কৰা সংখ্যাটো কোনটো?
A17
B19
C20
D18
Answer & Solution
Correct answer: D. 18
প্ৰতিটো পদ 5 কৈ বৃদ্ধি পাইছে, গতিকে 13 ৰ পিছৰ পদটো হ'ল 13 + 5 = 18।
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