Question

3, 5, 9, 13, 21,  .​

Answer 1

Answer:

most probably their r two option 29 or 37

Step-by-step explanation:

5-3=2

9-5=4(2*2)

13-9=4(2*2)

21-13=8(4*2

so now the answer can be

21+8=29(4*2)

or

21+16=37(8*2)