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Mathematics 9 Online
OpenStudy (anonymous):

need help with finding the next three terms in each sequence 1,8,27,64 could anybody help me

OpenStudy (anonymous):

what is the common thing that you notice about these numbers?

OpenStudy (anonymous):

i dont know they all use multiplication

OpenStudy (anonymous):

think hard. what is 8 divided by 2?

OpenStudy (anonymous):

4

OpenStudy (anonymous):

and 4 divided by 2?

OpenStudy (anonymous):

2

OpenStudy (anonymous):

good. so 8 is 2 times 2 times 2. do you see a similar pattern in the rest of the numbers?

OpenStudy (anonymous):

no i still do see the pattern

OpenStudy (anonymous):

okay. what is 27/3?

OpenStudy (anonymous):

81

OpenStudy (anonymous):

I asked 27/3, not 27*3 :)

OpenStudy (anonymous):

9

OpenStudy (anonymous):

and 9/3?

OpenStudy (anonymous):

3

OpenStudy (anonymous):

so 27 is 3 times 3 times 3. Now do you see a pattern?

OpenStudy (anonymous):

so each on is divided by the same number 3 time

OpenStudy (anonymous):

let's see if that's true, 1 is 1 times 1 times 1 8 is 2 times 2 times 2 27 is 3 times 3 times 3 so what should 64 be?

OpenStudy (anonymous):

4

OpenStudy (anonymous):

2^3, 3^3, 4^3, etc no, cube root

OpenStudy (anonymous):

64 is 4?

OpenStudy (anonymous):

they are all cube root LOL good job mate

OpenStudy (anonymous):

they are all cube root LOL good job mate

OpenStudy (anonymous):

so the next on is number is going to 125

OpenStudy (anonymous):

yes, and the two after that?

OpenStudy (anonymous):

216,343

OpenStudy (anonymous):

there you go! you got your answers :)

OpenStudy (anonymous):

got other question could you help me with those

OpenStudy (anonymous):

sure, but before you post them, try to work out the answers on your own, you will learn better.

OpenStudy (anonymous):

@cable83, thank you! :)

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