Multiple choice general knowledge math & puzzles 2,5,17,65,? 254 255 256 257 Reveal answer Fill a bubble to check yourself D Correct answer Explanation The sequence follows the pattern 4^n + 1: 4^0+1=2, 4^1+1=5, 4^2+1=17, 4^3+1=65. The next term is 4^4 + 1, which is 256 + 1 = 257. Other options like 254 or 256 do not fit the exponential growth plus constant.