I disagree. There are these two:
P1 (two men out of 3 men and 1 woman) = 3/4*2/3=1/2
P2 (two women out of 2 women and 1 men) = 2/3*1/2=1/3
but also P3 (one each from both canoes) = 1/2*2/3=1/3.
So IMO, the answer is 1/2*1/3 + 1/3 = 1/2.
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993