[" of formulig "20010" 3) "810" is to be choosen "15" ? "],[" 1) "7800" of an "8" oar boat is tow on stroke "],[" The crew of an "8" oar "$" can row on stroke "],[" from "12" Men,of whom "3" can ber of ways the "],[" from "12" Melected the number of ways the "],[" side only.If selected is "],[" crew can be arranged is "],[" crew can be arranged is "],[[" crew can be arranged is "],[" crew can be arranged is "],[" crew can be arranged is "]],[[" 1) "^(9)c_(4)*c_(4)," 4) "12,c_(4)^(8)c_(4),4!.4!]]