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Class 10MathematicsReal NumbersFundamental Theorem of ArithmeticMediumLevel 5
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If the two numbers are 16 and 45, which statement about them is correct?

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Answer and explanation

Correct answer: They are co-prime

Step 1: (16=2^4) and (45=3^2\times5). Step 2: They have no common prime factor, so they are co-prime. Step 3: Co-prime numbers have HCF 1.

Related tags

CoprimePrime-FactorisationMedium

Frequently asked questions

What is the correct answer to this question?

They are co-prime

Why is this the correct answer?

Step 1: (16=2^4) and (45=3^2\times5). Step 2: They have no common prime factor, so they are co-prime. Step 3: Co-prime numbers have HCF 1.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Fundamental Theorem of Arithmetic.

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  1. 1According to the Fundamental Theorem of Arithmetic, every composite number can be written in which form?
  2. 2What is the prime factorisation of 36?
  3. 3What is the correct prime factorisation of 60?
  4. 4What does uniqueness mean in the Fundamental Theorem of Arithmetic?
  5. 5In the prime factorisation of 84, what is the power of 2?
  6. 6The number (2^3\times3^2) is equal to which number?
  7. 7Which is the prime factorisation of 45?
  8. 8Which of the following numbers is prime?
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