50th term of 7,5,3,1
7, 5, 3, 1 is an arithmetic sequence with common difference (d) = -2 and first term (a) = 7.Tn = a + (n -1)dT50 = 7 + (50 - 1) x -2 = 7 + 49 x -2 = 7 - 98 = -9150th term = -91
