You are having 31kg of rice. You are provided with a 1kg stone for weighing. In how many weights the 31kg of rice can be weighed. ?	Choose the correct choice from the following:  A) 3  B) 4  C) 5  D) 6  E) 7
in 1st weight 1kg stone and 1 kg rice.. rice weighed = 1kg.   2nd weighing 2kg of (stone +rice) and 2 kg of rice.. rice weighed = 3kg.   3rd weighing 4kg of (stone +rice) and 4 kg of rice.. rice weighed = 7kg.   4th weighing 8kg of (stone +rice) and 8 kg of rice.. rice weighed = 15kg.   5th weighing 16kg of (stone +rice) and 16 kg of rice.. rice weighed = 31kg.   Therefore 5 weights   ANSWER:5
<result>C</result>
You are having 31kg of rice. You are provided with a 1kg stone for weighing. In how many weights the 31kg of rice can be weighed. ?