16 21 22 29
26
It is 26 followed by 31
My guess: 2.5
16+10= 26 26-5= 21 21+10= 31 31-5= 26 The answer is 26
16 21 22 29
a
26
24, they are going up in 3's, 13, 16, 19 and 18, 21 so next number is 24.
It is: 34
24
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
My guess: 2.5
16+10= 26 26-5= 21 21+10= 31 31-5= 26 The answer is 26
The next composite number after 20 is 21.