Off the top of my head I know there was a lot of researching by means of books. Books were where you went to find information. So nowadays you can find everything with a search engine whereas you had to go to the bookstore back then.
Answer:
- num1=10
- num2 =20
- num3="30"
- sum = num1+num2+num3
- print (num1)
- print (num2)
- print (num3)
- print (sum)
The error is at line 3. The variable num3 has been assigned a string value with use of the quotes.
To fix the error, take away the quotes from the number 30, since the arithemetic operation cannot be carried out on the string in python program language.
Explanation:
