i opened the sack and took one coin from each… now since we know the weight… i divided it into 5-5 then 3-2.. and so on… i also thought what if we put all 10 coins together and start removing one coin at a time.. and when weight reduces by 9 we will get our coin

4 weighings..

Think again, Girish!

regards

J

i opened the sack and took one coin from each… now since we know the weight… i divided it into 5-5 then 3-2.. and so on… i also thought what if we put all 10 coins together and start removing one coin at a time.. and when weight reduces by 9 we will get our coin

No, the latter would count as 10 weighings, since you would be recording the weight ten times.

regards

J

3 weighing

Nope, 3 is not the answer I am looking for either!

regards

J

Is 5 the answer ?

I’m afraid not, Tanvi. All will be revealed on Thursday, though ðŸ™‚

regards

J