More letter equations - some easy-peasy, some a bit trickier. As ever, no valiant tries are turned away, even if they don't match my answer

-A. 1 = W. on a U.
-B. 2 = H. are B. than O.
-C. 3 = M. I.
-D. 4 = J. M. Think English crime thriller and 60s TV series
-E. 6 = C. A. in a B. R. Think organic chemistry
-F. 9 = I. in a B. G.
-G. 10 = Y. in a D.
-H. 36 = N. on a R. W. (E. Z.)
-I. 40 = Y. of M. for a R. A.
-J. 100 = L. in a C. Think (old) units of measurement
-K. 1745 = J. R. Think Bonnie Prince Charlie
-L. 3600 = S. in an H.

L.3600=Seconds in an Hour

F. 9 = Innings in a Ball Game

Both good! (Don't pretend to understand F, michele! )

i. 40 "years of marriage for a ruby anniversary"

Bernie

g. ten years in a decade

A. One wheel on a unicycle

Salut Rog.

C. Three Mile Island

B. 2 hands are better than one

Excellent answers, all!

J. 100 legs in a centipede

margo

H. 36 numbers on a roulette wheel (excluding zero)

margo - good answer, almost as good as mine, but the "in" doesn't quite fit. Think of (quite archaic) unit of measurement...

Great answer, Bob!

D.4=Just Men

Yup!

J.100 links in a chain?

margo

K. 1745= Jacobite Rebellion

K. Jacobite rising???

Gail beat me to it.

All good!

E. 6 = carbon atoms in a benzene ring

Certainly is, Cheryl