It was from my mother to him as a Christmas present. It had plastic pieces on a peg board with a hard plastic clear case. Here is that puzzle for you to solve in digital form. Moreover, how many possible solutions are there to this puzzle?      ..read more

A statistician is carrying out a doorstep survey of the ages of children in families. He rings the door-bell of a maths teacher who says  -->  "Well let's see: I have three children. The product of their ages is 36, and the sum of their ages is the same as the number of this house". The canvasser frowns and says -->  "I still need a hint here".  The maths teacher says -->  "OK, my eldest kid just started piano lessons" "That's all I needed to know" says the canvasser, and walks away filling out the form. Q1. What were the ages of the children ? Q2. What was th ..read more

The  strip shown has two sides : A straight line of 1 Unit Length and an arc from a Circle having a radius of 1 Unit ! The diagram is shown below. Find the Area of the Strip in Square Units of the same Unit ..read more

Hi everyone, thougt i would post this intersting one:   7 Sales executives have 1 million dollars to divide amongst themselves. The most senior sales executive propses a particular split and then everyone votes (each person's vote is equal). If at least 50% of the people accept, then the money is divided the way that was suggested. Otherwise the sales executive who propsed it gets fired...and then we move on to the next senior sales exec and the whole process repeats. The executives are rational (want to keep their jobs first and also get as much money as possible), and they also would pr ..read more

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Why does the hourglass not start rising right away?   ..read more

If *C* is a Cube and *S1* is the Sphere Inscribed and *S2* is the Sphere Superscribed then  (1) What is the fraction of the volume of *C* is contained in *S1* (2) How many times the volume of *S2* is that of *S1 ..read more

Here are n circles of radius r arranged in a closed string. The centers of the adjacent circles are connected with straight lines. What is the difference between the orange and the blue areas?   ..read more

Cut a Cube into six identical pieces each having nine edges ..read more