Four Bulls

I had learnt a two-player game, Bulls & Cows, during my first job of teaching. Of course, now you could play it online too or you even get apps for smartphones. Check it out; it is for all ages and is quite fun! In essence, one player holds a [...]



The guessing game story reminded me of an interesting but uncommon puzzle that was posed to us by one of our teachers. I am grateful to him as I found it handy during hundreds of hiring interviews that I had to take, many years later, where I needed a [...]


Guessing Game

Give the following instructions to a friend: Think of two numbers the number of the month in which you were born and the number of the day of the month on which you were born. Multiply the month number by 5. Add 6. Multiply by 4. Add 9. Multiply [...]

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