MathematicsEasy178×since 2002Q5286The sum of the series 1+14.2!+116.4!+164.6!+.......1 + {1 \over {4.2!}} + {1 \over {16.4!}} + {1 \over {64.6!}} + .......1+4.2!1+16.4!1+64.6!1+....... ad inf. isAe−1e {{e - 1} \over {\sqrt e }}\,ee−1Be+1e{{e + 1} \over {\sqrt e }}ee+1Ce−12e{{e - 1} \over {2\sqrt e }}2ee−1De+12e{{e + 1} \over {2\sqrt e }}2ee+1Check answerSkip