Question

3 + 6 + 9 + 12 +..........+ 300 എത്ര ?

• A. 15150
• B. 15510
• C. 10550
• D. 16150

Answer 1

Answer:

A. 15150

3 + 6 + 9 + 12 +..........+ 300 = 3(1+2+3+4+........+100) = 3 × {n(n+1)/2} = 3 × {100(101)/2} = 3 × 10100/2 = 15150