Question 1055762
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If you really want to solve this problem, then disintegrate this sequence in two geometric sequences


{{{1/4}}} + {{{3/4^2}}} + {{{1/4^3}}} + {{{3/4^4 + ellipsis }}}  =  ({{{1/4}}} + {{{1/4^3 + ellipsis }}})  +  ({{{3/4^2}}} + {{{3/4^4 + ellipsis )}}})


and find the sum of each sequence separately.