Check sibling questions

Which of the following variable names are invalid? Justify.

(a) try

(b) 123Hello

(c) [email protected]

(d) sum



  1. try - invalid variable name since it is a keyword.
  2. 123Hello - invalid variable name since it starts with a digit.
  3. [email protected] - invalid variable name since it has a special character.
  4. sum - valid variable name

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.