Which of the following is a valid variable name?

1. 1name
2. na*me
3. name
4. name one

Anu wants to change the width of a column Author in a Table Library from Varchar(20) to Varchar(30). Which command should she use?

Seema is collecting data for her science project from science blogs, e-newspapers and various websites this process is known as …………… .

1. Data Capturing
2. Data Retrieval
3. Data Storage
4. All of these

What will be the correct output of the following code:

a, b = '30', '5'
c = a+b
print(c)

1. 19
2. 305
3. ValueError
4. TypeError