Question

In an ap a1+a24=100.Then what is the value of a2+a23=?

Answer 1

let a be x
$x + 24x = 100 \\ 25x = 100 \\ x = 100 \div 25 = 4$
hence
$2x + 23x \\ = 25x \\ = 25 \times 4 \\ = 100$
HOPE IT HELPS