Ditloid with number missing

[lizzysparkle]

for example ?BM = 3 blind mice TF? = the famous 5

Question TODT?

the others have all been very straightforward but just can't think of this

[weecalf]

Its definite its TODT .Can the letters represent figures as well and is it single numbers or can the answers be two ,three or four figures .

[lizzysparkle]

It is an office quiz, I have asked the lady who prepared it to check this one. I don't think it can be correct. Thanks for looking.