Math Question...?

Question

In the fraction 3/© , © may not be substituted by which of the following sets?
a) {1, 2, 4}
b) {-2,-3,-4}
c) {1, 3, 7}
d) {0, 10, 20}
e) {1.8, 4.3}

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I have NO IDEA what this is talking about....
I am studying for a GED and Need to know this I guess.
What is this? I know the answer is 'D', but I don't know why. Thank you for you help.
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Also If anyone knows of a website that gives a GOOD explaination of these types of things, I would like a link.

Answer 1

Yes, the answer is D because in the set D, there is a value 0. You cannot divide a number by zero such as 3/0. You can do 3/10 and 3/20 but that 3/0 can't be done, making the entire set not possible.

Answer 2

The answer is D because you CANNOT divide by a 0 EVER

divding by a set means that you divide by each individual number in the set. so A would look like this 3/{1, 2, 4} = 3/1, 3/2, 3/4

and therefore D would look like this 3/{0, 10, 20} = 3/0, 3/10, 3/20
since 3/0 cannot be done mathematically and that is the only set that contains a zero then D is the answer.

Answer 3

Its simple:

Set D is: {0, 10, 20}
© cannot be replaced by 0 because if 0 substitutes ©, the fraction will be 3/0, which is improper.

So the answer is D.

Answer 4

D is your answer you can not divide something by 0. http://www.mathleague.com/help/fractions/fractions.htm is a site on fractions I hope that helps

Answer 5

b(-1,-2,-3,-4)

Answer 6

The set d) because in this set is zero and you can´t divide by zero

Answer 7

3 / 0 Is undefined

- - - - - - -s-

Answer 8

division by zero is not defiend

Answer 9

either u go:
1.http://www.wolfram.com/products/student/mathforstudents/landing.html
2.www.kasamba.com
3.http://mathforum.org/dr.math/ask/
or just search 4 the 1 u like:
4.http://www.google.com./search?hl=ar&q=Math+Question...%3F+&btnG=%D8%A8%D8%AD%D8%AB+Google&meta=

Answer 10

u post twice...go ask yr tchr or yr best friends...