Multiple choice general knowledge math & puzzles A,K,F,P,K,U,? K P E Z Reveal answer Fill a bubble to check yourself B Correct answer Explanation The sequence follows an alternating pattern: add 10, subtract 5. Starting from A(1): 1+10=11(K), 11-5=6(F), 6+10=16(P), 16-5=11(K), 11+10=21(U). Continuing the pattern: 21-5=16(P).