| John203--I think what they are saying is: say you don't know how to get the answer to part A, but you know how to do B,C, and D. Put some number down for A (or just BS an answer), then use it correctly for parts B,C, and D. You'll get credit for B, C, and D because you did those parts right, even if your answer to part A is wrong.
You can get a lot of points on FR by doing that. Don't just look at part A, give up and not bother with the rest of the problem. Even if the number to answers B, C and D is wrong because A is wrong, if you employ the equations/concepts correctly in the other three, you'll get credit. |