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xmelodymusic
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hii , the top three levels have 4, 10, 16 blocks this implies the as you go down the pyramid you add 6 more blocks ! its like a A.P series , i.e. you add 6 more to each level ! 4, 10 , 16,............... for total number of blocks used you simply find the sum of the A.P series |dw:1340951554821:dw|
your welcom:) hope you got the answer :)
let me know if you need further clarifications :)
Thank you very much! Would you mind helping me with two other questions? :))
what are they? let me know !
What is the sum of the geometric sequence 8, –16, 32 … if there are 15 terms
and What is the sum of a 6-term geometric sequence if the first term is 11, the last term is –11,264 and the common ratio is –4?
:D Thanks in advance.