a
31. 5 = 1+4 10 = 5+5 16 = 10+6 23 = 16+7 31 = 23+8 Next number will be 31+9 = 40. After that, 40+10 = 50.
The next number is 49+8 = 57
16 to 26 (+10) 26 to 21 (-5) 21 to 31 (+10) 31 (-5) = 26 26
The rule is 5, 10, 15 and so the next number will be 20+31 = 51
a
26
31
31. 5 = 1+4 10 = 5+5 16 = 10+6 23 = 16+7 31 = 23+8 Next number will be 31+9 = 40. After that, 40+10 = 50.
i this next word will be 26. because 16+10=26 26-5=21 21+10=31 31-5=26
31.
31
The next number is 49+8 = 57
16 to 26 (+10) 26 to 21 (-5) 21 to 31 (+10) 31 (-5) = 26 26
http://wiki.answers.com/What_is_the_next_number_16_26_21_31
It is 26 followed by 31
31.............[15+1=16, 16+3=19, 19+5 =24, 24+7=31]