Question

find next term in below series 19.5,21.5,25.5,33.5 ?

Answer 1

Answer:

See the difference between 1st term and 2nd is 2. 2nd and third is 4 and so on. The difference is becoming double in the series. So, 25.5 and 33.5 has a difference of 8. So the next term is 33.5 + 16 which is 49.5