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Which option has incomplete pri... | 3: Prime factorisa...
किस विकल्प में अभाज्य गुणनखंडन अधूरा है?
Which option has incomplete prime factorisation?
#prime-factorisation
#incomplete-form
#hard
A \(2^5\times21^2\)
B \(2^5\times3^2\times7^2\)
C \(2^3\times3^2\times5\times7\times11\)
D \(3^2\times5^2\times7^2\)
Explanation opens after your attempt
Correct Answer
A. \(2^5\times21^2\)
Step 1
Concept
In an incomplete form, a composite base remains.
Step 2
Why this answer is correct
21 is composite and \(21=3\times7\), so \(2^5\times21^2\) is not final.
Step 3
Exam Tip
Change it into \(2^5\times3^2\times7^2\). चरण 1: अधूरे रूप में कोई संयुक्त आधार बचा रहता है। चरण 2: 21 संयुक्त है और \(21=3\times7\), इसलिए \(2^5\times21^2\) अंतिम नहीं है। चरण 3: इसे \(2^5\times3^2\times7^2\) में बदलें।
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