जॉइन Examsbookउत्तर : 2. "5"
How many number of weights do you need to weight 31 kg of Rice if you have one kg of weight stone ?5
प्र: How many number of weights do you need to weight 31 kg of Rice if you have one kg of weight stone ?
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उत्तर : 2. "5"
व्याख्या :
Answer: B) 5 Explanation: There are total 5 ways.we have only one kg of weight so,2kg = 1kg + 1kg4kg = 1 + 2 + 18kg = 1 + 2 + 4 + 116kg = 1 + 2 + 4 + 8 + 131kg = 1 + 2 + 4 + 8 + 16So 5 weights are needed.