Question

The following are all valid variable names: under_bar, m928134, t5, j7, her_sales$, his_$account_total, a, b$, c, z, and z2.

a) True
b) False

Answer 1

The statement about valid variable names is False because not all given examples adhere to universally accepted variable naming conventions, as special characters like the dollar sign ($) and names starting with digits are not allowed in many languages.

Step-by-step explanation:

The statement that the following are all valid variable names: under_bar, m928134, t5, j7, her_sales$, his_$account_total, a, b$, c, z, and z2, is False. Variable naming conventions typically allow for letters, digits, and underscores, but special characters like the dollar sign ($) are not universally accepted across all programming languages as valid characters in variable names. In some programming languages such as PHP, the dollar sign is used to denote variables, but it's not a standard across all languages. For example, in languages such as Python and Java, a variable name cannot contain special characters like $, and it cannot start with a digit.