Real Numbers
RD Sharma
CBSE
Grade 10
Question:
If $\text{HCF}(a, b) = 1$, then $a$ and $b$ are called:
(a) Composite numbers
(b) Coprime numbers
(c) Twin prime numbers
(d) Even numbers
Step-by-Step Solution
Key Concept: Two numbers are coprime if their highest common factor is 1.
By definition, numbers with $\text{HCF} = 1$ are coprime numbers. [1.0 Mark]
---
🎯 Official CBSE Marking Scheme:
Recalling definition of coprime numbers: 1.0 Mark
Correct Answer: Coprime numbers
Confused by the solution? Ask the AI to explain a specific step, tell you where you went wrong, or break down the key trap in this question.