Double 15 is equal to 30
yes
It is 204000. There is no equal renaming possible.
A2 has double the area of A3, with a width equal to the length of A3 and a length equal to double the width of A3
Since a quartet equal four, a double quartet would equal eight (4+4=8).
1 + 49, is a possible answer.
two times a negative number does not equal 0.
Double price is equal to 200% of the original price.
That is irrelevant, there is not possible way y=xy, and there is no possible way xy=x.
no because that is not possible
125/100 is a possible answer.
Yes.