Respuesta :

Answer:

25

Step-by-step explanation:

You start by multiplying 2*3*4 which gives you 24, then you add 1 to that, which is 25.

Answer:

25

Step-by-step explanation:

it's form Arithmetic Series (in it sum of A.M). By using the formula: sum=n/2*(2a+(n-1)d).