Find the fourth term from the end in an A.P. – 11, – 8, – 5, . . ., 49.
First term from end a = 49tn = – 11tn – 1 = – 8Common difference d = tn – tn – 1= – 11 – ( – 8)= – 11 + 8= – 3Now, by using nth term of an A.P. formulatn = a + (n – 1) dwhere n = no. of termsa = first termd = common […]
Choose the correct alternative answer for each of the following sub questions.
(1) Choose the correct alternative answer for each of the following sub questions.The sequence – 10, – 6, – 2, 2, . . .A. is an A.P., Reason d = – 16B. is an A.P., Reason d = 4C. is an A.P., Reason d = – 4D. is not an A.P. Solution:B. is an A.P., Reason d = 4Explanation:First term a […]