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Subjects
Class 10MathematicsReal NumbersFundamental Theorem of ArithmeticMediumLevel 5
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What is the correct prime factorisation of 945?

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Answer and explanation

Correct answer: (3^3\times5\times7)

Step 1: Write (945=9\times105). Step 2: (9=3^2) and (105=3\times5\times7), so (945=3^3\times5\times7). Step 3: Do not keep composite factors like 9 or 105 in the final answer.

Related tags

Prime-FactorisationMediumClass-10

Frequently asked questions

What is the correct answer to this question?

(3^3\times5\times7)

Why is this the correct answer?

Step 1: Write (945=9\times105). Step 2: (9=3^2) and (105=3\times5\times7), so (945=3^3\times5\times7). Step 3: Do not keep composite factors like 9 or 105 in the final answer.

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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