Latest IBM Aptitude Question SOLUTION: I use some logic here but cant assure this. so guyz plz solve these. 1> 1, 3, 3, 2, 8, 10, 3, 4, 12, 4, 8, ? (Is it 21?) 2> 9, 12, 4, 8, 12, 15, 5, 9, 3, 6, 2, 6, 6, 9, ? 3> 15 3/