what is the sum of the last four terms 97+99+101+....+121?

Answer:Sum of last four term is 472.Step-by-step explanation:Given : 97+99+101+....+121.To find : what is the sum of the last four terms .Solution : We have given that  97+99+101+....+121.Common difference =  second term - first termCommon difference = 99 - 97 =  2Then , fourth term 101 + 2 = 103 Fifth term 103 + 2 = 105 Sixth term  105 + 2 = 107 107 + 2 = 109 109 + 2 = 111111+2 = 113 113 + 2 = 115 115 + 2 = 117117 + 2 = 119119 +2 = 121Then last four terms are 115 ,  117, 119, 121.Then,  S = 115 + 117 + 119 +121S = 472Therefore, Sum of last four term is 472.

Since all the terms are odd, the last four terms would be 115+117+119+121115 + 117 = 232232 + 119 = 351351 + 121 = 472Answer: 472I hope this helped :)