Exam 98-381 topic 1 question 24 discussion

Actual exam question from Microsoft's 98-381

Question #: 24
Topic #: 1

You are creating a function that manipulates a number. The function has the following requirements:
✑ A float is passed into the function
✑ The function must take the absolute value of the float
✑ Any decimal points after the integer must be removed
Which two math functions should you use? Each correct answer is part of the solution. (Choose two.)

A. math.fmod(x)
B. math.frexp(x)
C. math.floor(x)
D. math.ceil(x)
E. math.fabs(x)

Show Suggested Answer

Suggested Answer: CE 🗳️
C: math.floor(x) returns the largest integer less than or equal to x.
E: math.fabs(x) returns the absolute value of x.
Incorrect Answers:
A: math.fmod() takes two variables
B: math.frexp(x) returns the mantissa and exponent of x as the pair (m, e). m is a float and e is an integer
D: math.ceil(x) returns the smallest integer greater than or equal to x
References:
https://docs.python.org/2/library/math.html#number-theoretic-and-representation-functions https://docs.python.org/3/library/math.html

by DINESHAJ10 at June 27, 2020, 8:49 p.m.

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Mist3

4 years ago

math.floor(math.fabs(x)) So the answer is C & E

upvoted 3 times

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sana123

4 years, 7 months ago

The math.ceil() method rounds a number UP to the nearest integer, if necessary, and returns the result. To round a number DOWN to the nearest integer, look at the math.floor() method. and c and d

upvoted 1 times

anyadat

3 years, 9 months ago

It is asking for the absolute value of the float and to the decimal places to be removed, therefore it will never be math.ceil(). with math.ceil() not just the decimal part will be removed, however the integer shall be rounded up. The correct answers are C & E.

upvoted 1 times

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Neelz

4 years, 9 months ago

C & E is right answer. print(math.floor(math.fabs(x)))

upvoted 1 times

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DINESHAJ10

4 years, 11 months ago

c&D are correct to get whole number, without decimals

upvoted 3 times

nowisthetime

4 years, 10 months ago

It said each answer is part of the solution so you would have to combine two answers to form the solution. so C and E is correct.

upvoted 2 times

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FuzzyDunlop

4 years, 11 months ago

If you do ceiling then it will round up which changes the digits to the left of the decimal, whereas option E (floor) will round down so it will remove the digits to the right of the decimal without affecting the digit to the left of the decimal.

upvoted 4 times

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