1.   It was just dumb luck that we found the place at all.

2.   Sometimes I think my success was really just dumb luck.

3.   The cleanup of the oil spill was helped by good weather and a lot of dumb luck.

4.   It was just dumb luck that no one got hurt.

5.   It was dumb luck that we found this place at all.

6.   His success is just a matter of dumb luck.

7.   Although chemotherapy and radiation have been standard cancer treatments for decades, it sometimes seems to be almost dumb luck that they work.

8.   And so it goes for this oblivious master of dumb luck.

9.   And the merchandising windfall to Lucas was dumb luck, by his own account.

10.   Bad karma or dumb luck that our periods always seem to strike on the day of the hot job interview or the big presentation.