1.The binomial coefficients which are in decreasing order area.15C5,15C6,15C7{}^{15}C_5, {}^{15}C_6, {}^{15}C_715C5,15C6,15C7b.15C10,15C9,15C8{}^{15}C_{10}, {}^{15}C_9, {}^{15}C_815C10,15C9,15C8c.15C6,15C7,15C8{}^{15}C_6, {}^{15}C_7, {}^{15}C_815C6,15C7,15C8d.15C7,15C6,15C5{}^{15}C_7, {}^{15}C_6, {}^{15}C_515C7,15C6,15C5Login to continueOnly logged in users canattempt or see the solution.