Pick invalid variable from following ??? 1. SUM 2.Interest _paid 3.pai

1.	Pick invalid variable from following ??? 1. SUM 2.Interest _paid 3.paid 4.Roll-no
Answer» ong>Answer: 4. Roll-no Explanation: Because VARIABLES can only have _ and $ sign and NON other than that. It has - sign so it is an invalid VARIABLE

Pick invalid variable from following ??? 1. SUM 2.Interest _paid 3.paid 4.Roll-no

Answer»

ong>Answer:

4. Roll-no

Explanation:

Because VARIABLES can only have _ and $ sign and NON other than that. It has - sign so it is an invalid VARIABLE