again u have 15 coins , 1 defected. we don't know defect is heavy or light

find out the defected one..............

Now u will say it is impossible

TRUE

it is impossible

so to make it possible a the owner of all those 15 coins come and picks 1 coin and tell u that this is not defected and gives it back to u......

now find out the defected one

Deepak Patra , 11 Years ago

Grade upto college level