MCQ
A number which is a factor of every number is
- A$0$
- ✓$1$
- C$2$
- Dnone
✓
Answer
Correct option: B.
$1$
Lets consider prime and composite numbers separately and prove $1$ is a factor in each case.
Prime:
Example: $7$
Factors of $7$ are $1,7.$
Composite:
Example: $10$
Factors of $10$ are $1, 10, 2, 5.$
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