MathematicsEasy178×since 2002Q5287The sum of series 12!−13!+14!−.......{1 \over {2!}} - {1 \over {3!}} + {1 \over {4!}} - .......2!1−3!1+4!1−....... upto infinity isAe−12{e^{ - {1 \over 2}}}e−21Be+12{e^{ + {1 \over 2}}}e+21Ce−2{e^{ - 2}}e−2De−1{e^{ - 1}}e−1Check answerSkip