Respuesta :

The answer to your question is 21 and it is a fibonacci sequence if you needed to identify it
1 , 2 , (2+1=) 3, (3+2 =) 5, (5+3=) 8, (8+5=) 13, (13+8=)21

The next number is found by adding up the two numbers before it.

The nth sequence is [tex]T_n = T_{n-1} + T_{n-2}[/tex]

The next number is 21.