What is the main difference between business cards, envelopes and letterheads?

information included
layout
use of color
all of the above
none of the above

I don't know the *exact* answer but,

1) Letterheads:
-and business cards should be of similar design.
-Contain the same information as a business card,
-Convey information about an organization.

How are envelopes and letterhead different?
 Layout

I hope this information proves helpful in finding your answer.
Have a nice day!

def find_max(num_1, num_2):

   max_val = 0.0

   if(num_1 > num_2):

       max_val = num_1

   else:

       max_val = num_2

   return max_val

max_sum = 0.0

num_a = float(input())

num_b = float(input())

num_y = float(input())

num_z = float(input())

max_sum = find_max(num_a,num_b)+find_max(num_y,num_z)

print('max_sum is:',max_sum)

Explanation: