A point (x,y) is randomly selected such that 0 <= x <= 3 and 0 <= y <= 6. What is the probability that x + y <= 5? Express your answer as a common fraction.
+2668 
The blue area represents the successes (areas where the sum of x and y is less than or equal to 5)
The big rectangle represents all the possibilities.
So, the probability is area of blue shaded regionarea of total black rectangle.
Can you take it from here?
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