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Quiz Questions
Question 1: What is an identity element in a group?
The inverse
An element that's in every group
A random element
An element that leaves all others unchanged
Question 2: Is the set of integers under addition a group?
Yes
No
Undefined
Sometimes
Question 3: What is a subgroup?
Any subset of a group
A group with fewer elements
A subset that is also a group under the same operation
A group within a group structure
Question 4: What is the order of a finite group?
The number of elements in the group
The largest element
The identity count
The inverse count
Question 5: Is the set of real numbers under multiplication a group?
Yes
Undefined
No (0 has no inverse)
Sometimes
Question 6: What is a ring?
A group with two operations
A multiplication of groups
An algebraic structure with + and · satisfying certain axioms
A set of numbers
Question 7: Is Z (integers) a ring under addition and multiplication?
Sometimes
No
Yes
Undefined
Question 8: What property does a commutative group have?
a*b = b*a for all a,b
a*b ≠ b*a
a*a = a
a + b = 0
Question 9: What is the inverse of element a in a group?
Zero
The negative of a
The opposite of a
An element $a^(-1)$ such that $a*a^(-1)$ = e
Question 10: Is the symmetric group S_3 abelian (commutative)?
No
Undefined
Sometimes
Yes
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