Question

PLEASE HELP!
GCF of the following set of non-integers.
I tried to use excel but it's not working (it keeps giving me a value of zero)

3.788E-20
4.620E-20
5.978E-19
2.569E-19
4.838E-19
3.263E-19
3.671E-20
8.925E-20
5.473E-20
3.326E-19

Answer 1

*

Answer 2

@oldrin.bataku

Answer 3

Try it in Excel again, this time factoring out \(1\times10^{-19}\) or \(1\times10^{-20}\) from each cell first. It will prevent the rounding to 0.

Answer 4

i tried what you said, i factored out \(1 \times 10 ^{-20}\), and now it keeps giving me 1 :/

Answer 5

Factoring out \(1\times10^{-20}\) should give you
3.788 E 0
4.620 E 0
5.978 E 1
2.569 E 1
4.838 E 1
3.263 E 1
3.671 E 0
8.925 E 0
5.473 E 0
3.326 E 1

or simply,
3.788
4.620
59.78
25.69
48.38
32.63
3.671
8.925
5.473
33.26

Answer 6

That's what I did
look:

Answer 7

Hmm, in that case, you might want to try factoring out a higher power, like \(1\times10^{-23}\) to get rid of decimals. However, it's not entirely impossible that the numbers don't share a common divisor (other than 1). I think they're called "relatively prime" or something to that effect.

Answer 8

okay i'll try to do it. thanks for the help :)
but do you think it's because these values are not integers that's why it is not working?

Answer 9

I tried with 1.2 and 2.4. Excel tells me the gcd is 1, yet I would say that it's 1.2.

I tried again with 12 and 24, and then it worked, giving me gcd = 12.

So yes, non-integer entries will give you 1 as a gcd. But it's still entirely possible that your numbers are relatively prime.

Answer 10

do you know how can i find it?

Answer 11

Find what? If the gcd is 1, then it's 1.

Answer 12

oh , thanks