Parlez vous français?

The following is from an entrance exam to a French technical institute:

“What is the missing letter in the following sequence: 7(S), 11(O), 15(Q), 20(V), 30(_) ?”

The answer is “T”. Why?

Hint: the question is from an entrance exam to a French technical institute.

Oui, bien sur. T = trente.

@jesmed Of course! I speak French, and how could I have missed something like that?!

@Docnick, you just need to spend more time working on your Citroen. :wink: