Question

Determine o centesimo termo da P.A (2,7,...)

Answer 1

An=a1+(n-1)xr
A100=2+(100-1)x5
A100=2+99x5
A100=2+495
A100=497

Answer 2

$an=a_{1} +(n -1).r \\ a _{100} =2+ (100 - 1).5 \\ a_{100} = 2 + 99.5 \\ a_{100} =2+ 495= 497$