There are 8 pills. They are all of the same size and color. One pill weighs slightly more and is poisonous. You have a balanced scale and can only use it twice. How can you find the poisonous pill?
REVEAL THE ANSWER
Put 3 pills on each side of scale.If equal, put remaining 2,1 which is more in weight is poisonous pill. If not equal take 3 pills which have more in weight and put 1,1 – which one more in weight is poisonous pill, if both are equal reminder one is poisonous pill.