-11
40
2n+1
The nth term is 3n+7 and so the next number will be 22
209 over 143 in its lowest terms is 19/13 or 16/13
The sequence is Un = 19 - 3n so the 20th term is 19 - 3*20 = 19 - 60 = -41
3n+7
13 and 19.
They are 13 and 19
16/19 is in its simplest form.
Josh Hutcherson is 19; as of October 12th 2011(:
They are 13 and 19 which are prime numbers
19