Answer :
The probability of neither paperback nor non-fiction is 0.49
We must deduct the probabilities of selecting a paperback, a non-fiction book, and both from the overall probability, which is 1, in order to determine P(neither paperback nor non-fiction).
P(paperback or non-fiction) = P(paperback) + P(non-fiction) - P(both paperback and non-fiction)
P(paperback or non-fiction) =( 0.44 + 0.26 - 0.19 )
= 0.51
P(neither paperback nor non-fiction) = 1 - P(paperback or non-fiction)
= (1 - 0.51 )
= 0.49
