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What is the result of math.fsum([.1 for i in range(20)])?

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What is the result of math.fsum([.1 for i in range(20)])?

(a) 2.0

(b) 20

(c) 2

(d) 2.0000000000000004

I had been asked this question by my college professor while I was bunking the class.

My doubt is from Math in portion Mapping Functions and Modules of Python

1 Answer

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Right answer is (a) 2.0

Easy explanation - The function fsum returns an accurate floating point sum of the elements of its argument.

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