<prompt> Kokotoa jumla isiyo na kikomo S, ambapoS frac12 - frac24 frac38 - frac416 frac532 - nukta fracn2n -1n 1 dotsb.  <response>: Kuzidisha jumla kwa frac12, tunapatafrac12 S frac14 - frac28 frac316 - frac432 dotsb .KishaanzaalignS frac12 S kushoto frac12 - frac24 frac38 - frac416 frac532 - dotsb kulia kushoto frac14 - frac28 frac316 - frac 432 dotsb kulia frac12 - frac14 frac18 - frac116 frac132 - dotsb frac121 12 frac13.endalignHii inatupa frac32 S frac13, hivyo S frac29. 