Others Maths Puzzle

a man is facing north-west.he turns 90 degree in the clockwise direction, than 180 degree in the anticlockwise direction and then another 90 degree in the same direction. which direction is he facing now?

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Others Other Question
In an office there are 75% skilled workers and remaining are Unskilled. 80% of skilled workers and 20% of unskilled workers are permanent. If number of temporary workers is 189, then what is the number of total workers? The minimum number of multiplications required to evaluate expression
a+bx+cx^2+dx^3+ex^4
a)4 b)5 c)3 d)7