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Class 10MathematicsReal NumbersFundamental Theorem of ArithmeticHardLevel 4
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If (x=2^5\times3\times5^2) and (y=2^3\times3^4\times5), what will be the power of 2 in (xy)?

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Answer and explanation

Correct answer: 8

Step 1: Powers of the same base 2 are added in multiplication. Step 2: The power of 2 in (x) is 5 and in (y) is 3. Step 3: The total power is (5+3=8).

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Product-FactorisationPowersHard

Frequently asked questions

What is the correct answer to this question?

8

Why is this the correct answer?

Step 1: Powers of the same base 2 are added in multiplication. Step 2: The power of 2 in (x) is 5 and in (y) is 3. Step 3: The total power is (5+3=8).

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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10 more MCQs
  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?
  9. 9Which of the following numbers is composite?
  10. 10What is the prime factorisation of 90?
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