Infosys Company Numerical Ability Arithmetic

Q. Find the digits x,y,z
x x x x
y y y y
z z z z
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y x x x z
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Infosys Other Question
Q. Uncle Reuben and Aunt Cynthia came to town for shopping. Reuben bought a suit and hat for $15. Cynthia paid as much as for her hat as Reuben did for his suit then she spent the rest of their money for a new dress. On the way home Cynthia called Reuben's attention to the fact that his hat cost $1 more than her dress, then she added, if we had divided our hat money differently so that we bought different hats mine costing 1 and 1/2 time cost of yours then we each would have spent the same amount of money. In that case Uncle Reuben asked "how much would my hat have cost"
 Q. A man walks 15m towards South from a fixed point. From there he goes 12 m towards North and then 4 m towards West. How far and in what direction is he from the fixed point?