Hard Riddles

Hard riddles with answers are a true test of your brain power, reasoning and comprehension. You are sure to find these tough difficult riddles both challenging and puzzling. While these hard riddles and answers may drive you a little crazy sometimes, they may surprise you in the way they force you think out of the box.

10 Bottles 100 Pills

There are 10 identical bottles of identical pills. Each bottle contains 100 pills. Out of 10 bottles 9 have 1 gram of pills but 1 bottle has pills of 1.1 gram in weight. Given a measurement scale, how would you find the heavy bottle? You can use the scale only once.

Riddle Answer