10=L I mind benders ?!?

Question

Have mind benders I need answered. 18 1/2=M E from the W T
10=L I
3=C of a S L (R Y G)
ex:16=O in a p would be 16 ounces in a pound.
Anyone know the answers to the other three?! Thanks :)

Answer 1

18 1/2 Minutes Erased from the Watergate Tapes
10 Little Indians
3 Colors of a Stop Light (Red Yellow Green)