___ 20. The statement System.out.println(“\\\\\t\\\\”); will print the result:   \\​\\. ___ 21. Stepwise refinement technique should be used when you start learning how to write a Java program. ___ 22. Java comment symbols /* and */ can be nested in a Java program.

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Types of expressions

Humans use facial expressions as an effective way of non-verbal communication such as to convey messages, whereas computers use weighted expressions for operations.