A man starts climbing a 11 m high wall at 5 pm. In each minute he climbs up 1m but slips down 50 cm. At what time will he climb the wall?
A. 5 : 30 pm
B. 5 : 25 pm
C. 5 : 21 pm
D. 5 : 27 pm
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সঠিক উত্তরঃ
C.
5 : 21 pm
Explanation:
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