Sum of series `9/(1!)+19/(2!)+35/(3!)+57/(4!)+...` (A) `7e-3` (B) `12e-5` (C) `16e-5` (D) none

Show that 9/(1!)+19/(2!)+35/(3!)+57/(4!)+85/(5!)+...=12e-5

Sum of the infinite series (1)/(2!)+(1+2)/(3!)+(1+2+3)/(4!)+...to oo(e)/(3) b.e c.(e)/(2)d . none of these

The sum of the series 1+(3)/(2!) +(7)/(3!)+ (15)/(4!) + ……" to " infty , is : a) e ( e+1) b) e( 1-e) c) 3e-1 d) e(e-1)

The sum of the series ""(1^2)/(2!)+(2^2)/(3!)+(3^2)/(4!)+"i s" e+1 b. e-1 c. 2e+1 d. 2e-1

The sum of series 1/2!+1/4!+16!+………. is (A) (e^2-1)/2 (B) (e^2-2)/e (C) (e^2-1)/(2e) (D) )(e-1)^2)/(2e)

The sum of the infinite series is (1)/(1.3)+(1)/(3.5)+(1)/(5.7)+...oo(A)(1)/(7)(B)(1)/(3)(C)(1)/(5) (D) (1)/(2)

The sum of the series (1^(2))/(2!)+(2^(2))/(3!)+(3^(2))/(4!)+ is e+1 b.e-1 c.2e+1 d.2e-1

The sum of the series 1+1/4.2!1/16.4!+1/64.6!+………to oo is (A) (e+1)/2sqrt(e) (B) (e-1)/sqrt(e) (C) (e-1)/+2sqrt(e) (D) (e-1)/sqrt(e)