15.Write the arguments and check the validity of each of the following

A) Let P≡ price is high and q≡ items are available

“ price is high. Items are available is necessary price not to be high.

Therefore items are not available”

B) Let P≡ Production is low and q≡ rain continues

“Production is high if rain continues. rain does not continues .

Therefore either Production is low or rain continues”

C) Let P≡ he love her and q≡ she will not marry him

“ if he does not love her she will marry him. He love her

Therefore she will not marry him