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Show if the following are logically equivalent I) P->Q and NQ ->Np II) N{P∆Q} AND...

Show if the following are logically equivalent
I) P->Q and NQ ->Np
II) N{P∆Q} AND {NP∆NQ}
2] Give A={7,8,4,5}
B={X, Y, Z}
I) What Type Of Mapping Is A TO B
II) state the D{F}
III) state the rang of R?

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