alleryप्रत्येक पायरीवर दुप्पट करून एक मिळवा: 1, 3, 7, 15, 31. पुढील संख्या कोणती?
A62
B63
C61
D64
Answer & Solution
Correct answer: B. 63
प्रत्येक पद हे मागील पदाच्या दुपटीपेक्षा एकने जास्त आहे, म्हणून 31 x 2 + 1 = 63.
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