A canoe has two oars, left and right. Each oar either works or breaks. The failure or non-failure of each oar is independent of the failure or non-failure of the other. You can still row the canoe with one oar. The probability that the left oar works is 3/5. The probability that the right oar works is also 3/5. What is the probability R that you can still row the canoe? Choose the correct choice from the following choices:  A) 9 / 25  B) 10 / 25  C) 6 / 10  D) 2 / 3  E) 21 / 25

Rationale: "simply look at the question from the other side . what is the probability that you can ’ t row the canoe ? this would be 2 / 5 x 2 / 5 = 4 / 25 . using the idea that the probability of something happening is 1 – the probability that it doesn ’ t happen , you can use the following equation to reach the right answer r : 1 – 4 / 25 = 21 / 25 . answer choice e ."
Answer: E