allery1–6 सलग एकदा वापरा. 5 संपूर्ण शेजारी फरक 1–5 प्रत्येकी एकदा असणे आवश्यक आहे. पहिला =2,शेवटचा =5,दुसरा≠6. चौथा म्हणजे काय?
A6
B4
C3
D1
Answer & Solution
Correct answer: A. 6
फक्त पंक्ती 2,4,3,6,1,5 आहे, त्यामुळे चौथी पद 6 आहे.
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