Python Programming Fundamentals — Question 5

Group — This is a valid variable name.

if — This is an invalid variable name because if is a reserved keyword in Python and cannot be used as a variable name.

total marks — This is an invalid variable name because it contains a space, which is not allowed in variable names. A variable name must be a single continuous string without spaces.

S.I. — This is an invalid variable name because it contains full stops, which are not allowed in variable names. Variable names can only include letters, digits, and underscores.

volume — This is a valid variable name.

tot_strength — This is a valid variable name.

#tag — This is an invalid variable name because it starts with a hash symbol (#), which is not allowed in variable names. Variable names must start with a letter or underscore.

tag$\text{\textdollar}$ — This is an invalid variable name because it contains a dollar sign ($\text{\textdollar}$), which is not allowed in variable names. Variable names can only include letters, digits, and underscores.

9a — This is an invalid variable name because it starts with a digit, which is not allowed in variable names. Variable names must start with a letter or underscore.

for — This is an invalid variable name because for is a reserved keyword in Python and cannot be used as a variable name.