Alok Goyal's Puzzles Page

I got a lot of responses to this puzzle, one of the highest responses I have had ever. Also, most of the answers were correct, and had a similar theme. The answer does not necessarily require a video, and hence giving the answer in text itself. Before I do that though, just wanted to recognize the first few correct answers – Anku Jain, Brahman Rattan, Ruchir Godura and Hans Chung were the first ones to come back with the correct answers – thanks!

The solution effectively lies in reducing the “granularity” of the pills – divide the three pills in your hand into half each and call the parts left half and right half. Put all the left half together (left bundle) and the right half together (right bundle). Take another pill A, divide into two halves, and take one half of this pill with the left bundle on Day 1, take the other half of Pill A with the right bundle on Day 2 and the remaining two pills on Day 3.

Some people also gave a similar answer, where instead of dividing into two halves, they suggested that we crush the pills, make them into a powder, mix and then take. This is also correct.

Hope you enjoyed the puzzle and survived the desert!

Thanks again to Maneesh Dube for sending me this puzzle. Many people responded to this, however only a few got back to me with a complete answer. The ones who answered completely are Vikas Jangra and Ruchir Godura. Many others, including Maneesh himself gave only a partial answer.

The trivial answer is twice the speed. However, there are an infinite number of answers. Maneesh’s speed can be 2 times, 3/2 times, 4/3 times, …. (n+1)/n times faster than Nandini to meet at the same point. Complete solution on this link:

Hope you enjoyed the puzzle!

I got many answers to this puzzle, and there was a very good response. Most of you answered the puzzle correctly. The first ones I got correct were from Anku Jain and Sid Pareek.

The correct answer is Tuesday.

Here is the correct answer (Sorry no video this time, traveling currently without an iPad), I am reproducing the one from Anku Jain without any changes – thanks Anku!

1) Both Day 1 and Day 3 cannot be a lie. If it were so, there would be at least 2 true days.

2) This means Day 2 is a lie for sure. So, this day has to be one of Mon, Tue, Wed, Fri

3) Now, if Day 1 is true, it has to be Wed or Fri (because Day 3 is a lie). However, either Wed or Fri is not possible because of the types of days possible on the next day.

4) This means Day 3 is true. It cannot be Mon because of previous day constraint. So, It has to be Tues.

Hope you enjoyed the puzzle!