enjoy the laddoos...
Suppose you have 8 laddoos. (7 of 100gm , 1 of 50gm.) You can't detect the 50gm by seeing or anything the only way to detect the 50gm is by using treditional weighing machine (takdi-tola).
What is the minimum number of uses in which u can detect the 50gm laddoo by using (takdi tola)..
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1 solution
Combination. Seperate the 8 in 3 , 3 and 2.. Keep the 3,3 on either side of the machine.. If any one might have the 50gm than rest all are 100gm. Now take 1, 1 on either side if both are same than the remaining is 50gm or u know otherwise.. So minimum 2 uses..