TCS Company Logical Reasoning Direction Sense

A man goes 50Km north , then turned left walked 40Km, then turned right ? In which direction he is?
a)North b)South c)East d)West

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TCS Other Question

On planet korba, a solar blast has melted the ice caps on its equator. 9 years after the ice melts, tiny
planetoids called echina start growing on the rocks. Echina grows in the form of circle, and the relationship
between the diameter of this circle and the age of echina is given by the formula d = 4*S (t-9) for t T 9 where d
represents the diameter in mm and t the number of years since the solar blast.Jagan recorded the radius of
some echina at a particular spot as 7mm. How many years back did the solar blast occur?
a) 17 b)21.25 c)12.25 d)14.05
In T.Nagar the building were numbered from 1 to 100.Then how many 6’s will be present in the numbers?
a)18 b)19 c)20 d)21