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Question

In which of the following expressions prime factorization has been done


A

24=2×3×4

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B

56=7×2×2×2

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C

70=2×5×7

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D

54=2×3×9

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Solution

The correct option is C

70=2×5×7


Explanation of the correct option.

Option B: 56=7×2×2×2

We know that, prime factorization is the process of expressing a number as product of only Prime Numbers.

Since, 56 is expressed as product of only Prime Numbers.

Hence option B is correct.

Option C: 70=2×5×7

We know that, prime factorization is the process of expressing a number as product of only Prime Numbers.

Since, 70 is expressed as product of only Prime Numbers.

Hence option C is correct.

Explanation of the incorrect option.

Option A: 24=2×3×4

We know that, prime factorization is the process of expressing a number as product of only Prime Numbers.

Since, 4 is not a Prime Number.

Hence option A is incorrect.

Option D: 54=2×3×9

We know that, prime factorization is the process of expressing a number as product of only Prime Numbers.

Since, 9 is not a Prime Number.

Hence option D is incorrect.

Hence Option B and C are correct options.


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