Multiple choice general knowledge math & puzzles Find the next... 10 ,23 ,40 ,61 ,_ 76 86 96 none Reveal answer Fill a bubble to check yourself B Correct answer Explanation The differences between terms are increasing: $23-10=13$, $40-23=17$, $61-40=21$. The differences ($13, 17, 21$) increase by $4$ each time. The next difference is $21+4=25$. $61+25=86$.