1.Let a1,a2,…,ana_1, a_2, \ldots, a_na1,a2,…,an be a given A.P. whose common difference is an integer and Sn=a1+a2+⋯+anS_n = a_1 + a_2 + \cdots + a_nSn=a1+a2+⋯+an. If a1=1a_1 = 1a1=1, an=300a_n = 300an=300 and 15≤n≤5015 \le n \le 5015≤n≤50, then the ordered pair (Sn−4,an−4)(S_{n-4}, a_{n-4})(Sn−4,an−4) is equal toa.(2490, 249)b.(2480, 249)c.(2480, 248)d.(2490, 248)Login to continueOnly logged in users canattempt or see the solution.
