Correct option is: (c) 315
Given 0, 15, 45, 90, 150, 225, ___________
0, 0 + (15× 1), 15 + (15 × 2), 45 + (15 × 3), 90 + (15 × 4), 150 + (15 × 5), 225 + (15 × 6), 0, 0 + 15, 15 + 30, 45 + 45, 90 + 60, 150 + 75, 225 + 90
0, 15, 45, 90, 150, 225, 315
So, the answer is 225 + (15 × 6) = 315