NUmerical answers look right to me. minor corrections in red (typing errors?)a. P(A or B) = P(A) + P(B) Exclusive events

P( 1/4 x 1/4) + P(1/4 x 1/4) = 1/8

b. P( A or B) = P(1/2 x 1/2) + P( 1/4x1/4) = 5/16

c. P(A or B) = P(1/13 x 1/13) + P(12/52x12/52) = 10/169

d. P( A or B) = P(A) + P(B) - P(AandB) non -mutually events

= (1/4 x1/4) + (12/52 x 12/52) - P(1/16 x 36/676) = 0.1124