alleryప్రతి దశలో రెట్టింపు చేసి ఒకటి కలపండి: 1, 3, 7, 15, 31. తదుపరి సంఖ్య ఏది?
A62
B63
C61
D64
Answer & Solution
Correct answer: B. 63
ప్రతి పదం మునుపటి పదానికి రెట్టింపు చేసి ఒకటి కలిపితే వస్తుంది, కాబట్టి 31 x 2 + 1 = 63.
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