3 + 6 + 9 + 12 +..........+ 300 എത്ര ?A15150B15510C10550D16150Answer: A. 15150Read Explanation:3 + 6 + 9 + 12 +..........+ 300 = 3(1+2+3+4+........+100) = 3 × {n(n+1)/2} = 3 × {100(101)/2} = 3 × 10100/2 = 15150Open explanation in App