solve this
i f   s t a t e m e n t   p   &   q   a r e   t r u e   &   r   i s   f a l s e   t h e n   f i n d   t r u t h   v a l u e   o f   f o l l o w i n g   s t a t e m e n t s   p a t t e r n s 1 ) ~ p ( ~ q r ) 2 ) p ( ~ q - r ) 3 ) q ( p q )

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