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In old chestnut: language equations I posted the entire rec.puzzles FAQ/archive entry for these puzzles (like 26 = L. in the A.) but there are lots, lots more of these circulating on the internet. Here I will list other language equations I have found, which are not listed in the rec.puzzles archive and aren't simple variations of those.

Sometimes I have modified these slightly to put them into the canonical Equation Analysis Test form, or to make them correct. Some are US-specific. Some are UK-specific. To keep the list reasonable, I'm ignoring anything that isn't exact, addresses, years, things that can't be written in E.A.T. form, and things that there could be a whole list of, like 1 = Atomic Number of Hydrogen.

Warning: Some of the number links below could spoil the puzzles.

= L. (in T.)
0 = M.
1 = D. at a T.
1 = F. in the G.
1 = F. O. the C. N.
1 = H. on a U.
1 = R. A. in E. B.
2 = C. you put in
2 = G. of V.
2 = H. are B. T. O.
2 = Number it T. to T.
2 = P. of B. on a B. M. (or 2 = A. B. P., S. S., L., C., on a S. S. B.)
2 = S. to an A.
2 = T. D. (and a P. in a P. T.)
2 = W. in a F.
3 = C. in a F.
3 = H. on a C. (including the S. H.)
3 = L. K. who L. T. M.
3 = L. M. from S.
3 = P for a F. G. in (A.) F.
3 = P. into which A. G. was D.
4 = C. of the W.
4 = G. in the N. T. of the B.
4 = I. in a H.
5 = R. on the O. F.
5 = T. on a C. (including the S. in the T.)
6 = B. to an O. in C.
6 = F. in a F.
6 = F. on a D.
6 = P. on the S. of D.
7 = B. for S. B.
7 = C. in the W.
7 = D. S.
7 = D. in a W.
7 = L. F.
7 = S. on a F. P. P.
7 = Y. I.
7 = Y. of B. L. for B. a M.
8 = C. on a C.
8 = D. a W. (in the B. S.)
8 = F. in a M.
8 = P. of S. in the E. L.
9 = D. in a S. S. N.
9 = D. old P. P. is
9 = P. on a B. T.
9 = S. by a S. in T.
9 = S. in T.-T.-T.
10 = D. in a T. N. (including the A. C.)
10 = E in a D.
10 = G. B. (H. on a W.)
12 = M. of a J. (thanks Chris-O)
13 = C. in a S. (thanks N-Wing for solving this one)
13 = F. not in a S.
14 = P. in a S.
15 = P. in a R. T.
15 = R. B. on a S. T.
16 = T. (W. D. Y. G.?) (by T. E. F.)
18 = L. A. (of an A.)
18 1/2 = M. E. from W. T.
20 = F. O. in a P. (U. K.) (thanks Gritchka for solving this one)
20 = N. in a D.
20 = N. on a D.
20 = Q. (A., V., or M.)
21 = P. on a D.
21 = S. in a G.
24 = K. in P. G.
24 = H. from T.
24 = L. in the G. A.
24 = S. in a Q.
30 = S. over T. (NOT sixty over two)
31 = F. at B. R.
33 = V. in the H. S.
37 = P. of W. S.
39 = B. in the O. T. of the B.
39 = S. (in the N. by J. B.) (thanks Gritchka for solving the longer version of this one)
40 = T. (with A. B.)
42 = P. of the U. S. (through B. C.)
42 = the A. to L., the U., and E. (by D. A.)
50 = P. for a B. in D.
56 = S. of the D. of I.
60 = M in an H.
60 = S. in a M.
77 = S. S.
100 = Y. in a C.
147 = M. B. in S.
168 = H. in a W.
225 = S. on a S. B.
300 = S. for a P. G. in B.
360 = D. in a C.
435 = M. of the H. of R.
650 = S. in the H. of C.
655 = M. of P. (as of August 2000*) (thanks Chris-O)
2000 = P. in a T.
2001 = a S. O.
3600 = S. in an H.
6080 = F. in a N. M.

* This value sometimes changes. I will not be updating it, nor will I be adding any additional entries of this type (unless they've already crept into my unanswered list below)