??

number:=proc(l:: list)

?
?
?
?
?
?
?

end proc:

L:=[-1,10,2/3,sqrt(2)]:

number(L);

I do not understand.What should  i write  instead of question  marks in maple 11?Could  you write me in a detailed way by using proc?

What should  i write  instead of question  marks in maple 11?Could  you write me in a detailed way by using proc?

I understand. now thank you very much.