Neco 2018 Further Mathematics Question 50

Practice objective / multiple choice question 50 from the 2018 Neco Further Mathematics examination.

Neco 2018 Further Mathematics Objective / Multiple Choice Easy Difficulty
Question 50 NECO • 2018 • FURTHER_MATHEMATICS • objective

On the set \(A=\{1,2,3,4,5\}\) define a binary operation \(*\) by \(a * b = (a+b)\bmod 5\), where a result of \(0\) is written as \(5\). Find the identity element for \(*\) and compute \(3 * 4\).

Answer Options

A. Identity element is 5; 3*4 = 3
B. Identity element is 3; 3*4 = 4
C. Identity element is 1; 3*4 = 2
Correct Answer D. Identity element is 5; 3*4 = 2
Correct Answer
D
Correct Option:
Identity element is 5; 3*4 = 2

About This Question

This is Neco 2018 Further Mathematics Question 50. It is one of the objective questions from the 2018 Neco Further Mathematics examination.

Difficulty level: Easy .

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