Question

Number series 1,4,15,64,25,?

Answer 1

Here is what the series means it begins with 1 1*2 +2 =4 Second number 4*3+3=15 Third number 15*4+4=64 Fourth ...

Answer 2

Answer:

it begins with 1

1*2 +2 =4 Second number

4*3+3=15 Third number

15*4+4=64 Fourth number

64*5+5=325 Fifth number