allery3, 8, 13, __, 23, 28 లో ఖాళీని ఏ సంఖ్య పూరిస్తుంది?
A17
B19
C20
D18
Answer & Solution
Correct answer: D. 18
ప్రతి పదం 5 చొప్పున పెరుగుతుంది, కాబట్టి 13 తరువాతి పదం 13 + 5 = 18.
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