Cool Tricks with Arithmetic Progressions 5: Given T(3)+T(8)+...+T(98)=2017, find S(100).

Given the sum of the i-th terms (i=3,8,13,18,...98) of an AP, find the sum of the first 100 terms of the AP.

Builds on AP technique explained in the earlier video here:
https://www.youtube.com/watch?v=DKH1QDit3oI

Тэги:

#math #mathematics #GCSE #IGCSE #SPM #STPM #A_Levels #creative #shortcuts #arithmetic_progressions #AP #sequences #series #sums #summation #cool_tricks

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