Given: P(A) =1/3, P(B)=1/4, P (AUB)=4/13,
P(A intersection B) = P(A) + P(B) - P (AUB)
= 1/3 + 1/4 - 4/13
= (52+39 - 4x12)/156
= (52 + 39 -48 )/156
= 43/156
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