[확률통계 #28] 이산확률분포/레벨-1,2

[확률통계 #28] 이산확률분포/레벨-1,2

[레벨1-3]--------------------------------------------------------------------------------

[레벨1-4]--------------------------------------------------------------------------------

[레벨1-5]--------------------------------------------------------------------------------

[레벨2-1]--------------------------------------------------------------------------------

[레벨2-2]--------------------------------------------------------------------------------

[레벨2-3]--------------------------------------------------------------------------------

[공식]-------------------------------------------------------------------------
-자연수의 합
- 등비/등차 수열의 합