Question

If the 5th and 11th terms of an A.P. be 41 and 20, then find its first term and the sum of first 11 terms.

(a) 65, 410.5 (b) 55,412.5 (c) 50,412.5 (d) 53,400.5
Answer : (b)​

Answer 1

Answer:

If the 5th and 11th terms of an A.P. be 41 and 20, then find its first term and the sum of first 11 terms.

Step-by-step explanation:

55412.5