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A ceil function map a real number to __________

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A ceil function map a real number to __________

(a) smallest previous integer

(b) greatest previous integer

(c) smallest following integer

(d) none of the mentioned

The question was posed to me in an online interview.

My doubt is from Floor and Ceiling Function topic in portion Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

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Best answer
The correct choice is (c) smallest following integer

Explanation: Ceil function f(x) is the smallest  integer not less than x.

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