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Subjects
Class 10MathematicsReal NumbersPrime FactorisationHardLevel 8

Which option has incomplete prime factorisation?

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Answer and explanation

Correct answer: (2^5\times21^2)

Step 1: In an incomplete form, a composite base remains. Step 2: 21 is composite and (21=3\times7), so (2^5\times21^2) is not final. Step 3: Change it into (2^5\times3^2\times7^2).

Tags

prime-factorisationincomplete-formhard

Frequently asked questions

What is the correct answer to this question?

(2^5\times21^2)

Why is this the correct answer?

Step 1: In an incomplete form, a composite base remains. Step 2: 21 is composite and (21=3\times7), so (2^5\times21^2) is not final. Step 3: Change it into (2^5\times3^2\times7^2).

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Prime Factorisation.

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