Point to Ponder: Prime Factorisation

A number's prime factorisation is
23 X 32 X 52
Is the number even or odd? Explain your reasoning.
Name four other factors of this number, other than 2, 3 and 5.

32 comments:

  1. even, as there is a factor 2, anything times 2 will be even

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  3. The number is an even number as it has a number 0 in the ones place after mental calculation

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  6. the 2 is even so will only get even when powered, odd times odd is even and even times is even so the answer is even.
    6, 25,10 and 30

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  7. Even. It is a multiple of 2

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  8. Even, Anything times 2 will be even

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  9. Even. Every index notation has the even number '2' in it.

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  11. The number is even.I did mental calculations and arrived at the answer 360,(which is an even number)4 other factors of 360 is 4,6,90 and 60.

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  12. 4,8,9 and it is even like the number 6

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  13. Even. Because any number that is multiplied by a even number you will get an even answer.
    The four factors are 1,4 and 6.

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    1. The four factors are 1,4,6 and 30.... Sorry i forgot to put the 30 when typing.

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  14. even. 2 to the power of 3 is 8, 3 to the power of 2 is 6, 5 to the power of 2 is 10, hence, all is even number .

    the four other factors are : 4, 6 , 8 and 9.

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  15. It is even as the product of the base is even .

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  16. Multiplying anything by an even number gives you an even number, so the answer must be even.

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  17. Even. When there is an even number in the multiplication, in this case 2, the answer will always be even even when powered.

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  18. Even.
    When any number is multiplied by an even number, which is 8 (2 x 2 x 2 = 8), its product will also be an even number, regardless of whether it is even or odd.
    1, 4, 6.

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  19. index notation with a 2 is even.

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  20. it should be even as when the number is multiplied by an even it will become a even number

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  21. even, as the number is divisible by 2 . other factors are 6,4,,8 and 12

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  22. 2 to the power of 3 x 3 to the power of 2 x 5 to the power of 2= 8x9x25=(72x25)
    Look at the digits in the ones place, 2x5= 10
    10 is an even number so the umber is an even number.

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    1. 10 is an even number so the number is an even number.

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