The value of `sum_(r=1)^(15)(r2^r)/((r+2)!)` is `((17)!-2^16)/((17)!)` b. `((18)!-2^(17))/((18)!)` c. `((16)!-2^(15))/((16)!)` d. `((15)!-2^(14))/((15)!)`

The value of sum_(r=1)^(15)(r2^r)/((r+2)!) is (a). ((17)!-2^16)/((17)!) (b). ((18)!-2^(17))/((18)!) (c). ((16)!-2^(15))/((16)!) (d). ((15)!-2^(14))/((15)!)

The value of sum_(r=1)^(15)(r2^r)/((r+2)!) is (a). ((17)!-2^16)/((17)!) (b). ((18)!-2^(17))/((18)!) (c). ((16)!-2^(15))/((16)!) (d). ((15)!-2^(14))/((15)!)

The value of sum_(r=1)^(15) (r2^(r))/((r+2)!) is equal to (a) ((17)!-2^(16))/((17)!) (b) ((18)!2^(17))/((18)!) (c) ((16)!-2^(15))/((16)!) (d) ((15)!-2^(14))/((15)!)

The value of sum_(r=0)^(15)r^(2)((""^(15)C_(r))/(""^(15)C_(r-1))) is equal to

The value of sum_(r=0)^(15)r^(2)((""^(15)C_(r))/(""^(15)C_(r-1))) is equal to

The value of sum_(r = 1)^15 r^2 ((""^15C_r)/(""^15C_(r - 1)) ) of is equal to

The value of sum_(r = 1)^15 r^2 ((""^15C_r)/(""^15C_(r - 1)) ) of is equal to

sum_(r =1)^(16) ( sin [(2r pi)/(17)] + icos [(2rpi)/(17)] ) =

The valud of [15^(2)+16^(2)+17^(2)+…+ 30^(2)] is-