Question

Most children can understand abstract symbols and solve complex problems by the time they are years old.

Answer 1

Is this the question?

Answer 2

Some start that around 3rd grade, and that can be either 8 or 9 years old.

Answer 3

Sometimes they can memerize slightly less complex symbols by the time the are 2 years old.

Answer 4

Sorry, *memorize.

Answer 5

ill say 12

Answer 6

is it 12 3 10

Answer 7

it realy depends if they are miture

Answer 8

i would go with 12 :D

Answer 9

Wait, no, that is for less complicated symbols. Go with 10. That is about the age that teachers do "gifted" testing on children.

Answer 10

Can I have a medal? ^-^

Answer 11

heres my source .. Wikepedia