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For The Mathematically Inclined

Anil Saigal
01/18/2018

Problem 1

It takes 3 bricks to build a staircase with 2 steps, 6 for 3 steps.  How may bricks will it take to build 12 steps?

Problem 2
There are 3 different roads from city A to city B and 2 different roads from city B to city C. There are 3 roads between cities C and D, and 2 roads between cities B and D. How many ways can someone go from city A to city D.

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Please send your solutions anil@lokvani.com. 

Use Problem Solutions M-011818 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 01/04/18

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.

(~85 mph NE)

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

(24)

Congratulations to Ramachandran Balakrishna and Avanish Gowrishankar, who were winners of the last set of puzzles.



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