Use spaces but not commas to separate groups of _____________ in ...

[bobthebuilder]

Use spaces but not commas to separate groups of _____________ in decimal fractions.
 
  a. three digits
  b. whole numbers
  c. like numbers
  d. unknown quantities

Question 2

Treat numbers of the same type ______________ within a sentence, paragraph, or section.
 
  a. equally
  b. typographically
  c. numerically
  d. alphabetically

[stallen]

Answer to Question 1

a

Answer to Question 2

a

[bobthebuilder]

Wow, this really help

[miss_1456@hotmail.com]

Thanks for the timely response, appreciate it