Find the pattern and fill in the missing letters. T, T, F, F, S, S, ___, ___

Step-by-step explanation:

Given

T, T, F, F, S, S

Required

Fill in the missing letters

To fill in the missing letters, one has to observe and study the pattern carefully;

Closely looking at the pattern, one would notice that the pattern is the first letter of number starting from Two;

The pattern is as follows:

Two, Three, Four, Five, Six, Seven

So, the next two on the list would be Eight and Nine;

Hence, the missing letters are E,N

And the complete pattern is T, T, F, F, S, S, E, N