Multiple choice general knowledge math & puzzles Guess??? N , TW , THR , FR , ??? FV Av ZX SX Reveal answer Fill a bubble to check yourself A Correct answer Explanation The sequence represents the first letters of numbers: oNe (N), TWo (TW), THRee (THR), FouR (FR). The next number is FiVe, represented by the first two letters 'FV'.