Manipal MET2021MathematicsSequences and Series
The sum of the even multiples of 9 between 300 and 500 is
Options
- A4356
- B5336
- C5346
- D3456
Correct answer
A. 4356
Step-by-step solution
Even multiples of 9 are of the form 18 n . 18 n for n=1, , 27 lies between 1 to 500 and 18 n for n=1, , 16 lies between 1 to 300 . aligned Required sum & =18 [ _ n=1 ²⁷ n- _ n=1 ¹⁶ n ] & =18 [ 27 28 2 - 16 17 2 ]=4356 aligned