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For The Mathematically Inclined

Anil Saigal
01/04/2018

Problem 1

From a given point, A is traveling West at 60 mph and B is traveling North at 60 mph. What is the relative velocity of B with respect to A.

Problem 2
A group of 4 friends found seats in a row at the movie theater. In how many different orders can they sit?

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Please send your solutions anil@lokvani.com. 

Use Problem Solutions M-010418 as the subject line. Please include your full name in the text of the main message. Everyone with the right answer will be acknowledged in the next issue of Lokvani. 

Please do not post your solution in Post Comments. No credit will be given for solutions not sent to anil@lokvani.com. 

If you need clarification on any problem, please contact anil@lokvani.com. 

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Problems from 12/21/17


Problem 1
For a given volume, what should be the value of h/d such that a cylinder has the minimum total surface area including all surfaces.

(h/d=0.5)

Problem 2
In a 3x4 array, how many different squares can be drawn?

(20)

Congratulations to Ramachandran Balakrishna, who was the winner of the last set of puzzles.



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