1.

For any statement,p and q, prove that pimplies q -= (~p vv q).

Answer»


ANSWER :Prepare the truth table .
`(##SCH_OPM_ISC_MAT_XI_C27_E08_009_A01##)`
In this table , thecolumns headedp => Q and`~p VV q`COINCIDE , Hence , `(p=>q)-=(~p vv q).`


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