A selection of objects from a group where order does not matter. What is this concept called?
Difficulty: Medium
About this MCQ
This Medium Discrete Mathematics MCQ checks one syllabus fact.
The question is: “A selection of objects from a group where order does not matter. What is this concept called?”
The accepted answer is B. Combination. “A selection of objects from a group where order does not matter. What is this concept called” is answered by Combination (option B). Option A (“Modular arithmetic”) does not match the stem; it is a near-miss used to catch incomplete recall of Combination. Option C (“Set”) does not match the stem; it is a near-miss used to catch incomplete recall of Combination. Remaining alternatives (Boolean algebra) fall outside the same rule and should be eliminated once Combination is identified. Discrete Mathematics questions of this type reward precise definitions rather than approximate associations. Discrete Mathematics recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
- A. Modular arithmetic
Why not A: “Modular arithmetic” is not correct. The accepted answer is B. Combination. “A selection of objects from a group where order does not matter. What is this concept called” is answered by Combination (option B). Option A (“Modular arithmetic”) does not match
- B. Combination ✓
- C. Set
Why not C: “Set” is not correct. The accepted answer is B. Combination. “A selection of objects from a group where order does not matter. What is this concept called” is answered by Combination (option B). Option A (“Modular arithmetic”) does not match
- D. Boolean algebra
Why not D: “Boolean algebra” is not correct. The accepted answer is B. Combination. “A selection of objects from a group where order does not matter. What is this concept called” is answered by Combination (option B). Option A (“Modular arithmetic”) does not match
Correct answer
B. Combination
Explanation
“A selection of objects from a group where order does not matter. What is this concept called” is answered by Combination (option B). Option A (“Modular arithmetic”) does not match the stem; it is a near-miss used to catch incomplete recall of Combination. Option C (“Set”) does not match the stem; it is a near-miss used to catch incomplete recall of Combination. Remaining alternatives (Boolean algebra) fall outside the same rule and should be eliminated once Combination is identified. Discrete Mathematics questions of this type reward precise definitions rather than approximate associations. Discrete Mathematics recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
Source: Discrete Mathematics Official Reference Guide
Tags: computer science, discrete mathematics, mathematics, logic
Submitted by: MCQsHub Editorial
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