Question

4.3 Code Practice: Question 2
Write a program that uses a while loop to calculate and print the multiples of 3 from 3 to 21. Your program should print each number on a separate line.

(Python)

Answer 1

i = 3

while i  <= 21:

   if i % 3 == 0:

       print(i)

   i += 1

       

Answer 2

The required program written in python 3 is as follows :

num = 3

#initialize a variable called num to 3

multiples_of_3 = []

#empty list to store all multiples of 3

while num <=21 :

#while loop checks that the range is not exceeded.

if num%3 == 0:

#multiples of 3 have a remainder of 0, when divided by 3.

multiples_of_3.append(num)

#if the number has a remainder of 0, then add the number of the list of multiples

num+=1

#add 1 to proceed to check the next number

print(multiples_of_3)

#print the list

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