if the sum of 2nd and 3rd term is 22 and the product of 1st and 4th term is 85 what is it AP Share with your friends Share 3 Brijendra P. answered this Let the four terms are a-3d, a-d, a+d, a+3d Now according to the question, a-d+ a+d= 222a = 22a = 11Also, a-3da+3d = 85 a2- 9d2= 85 121-9d2=85 9d2=121-85 = 36d2= 4 d = ±2So a = 11 and d = 2 or -2 Now series is 11- 6, 11-2, 11+2, 11+6 or 5,9,13,1711+6, 11+2, 11-2, 11-6 or 5,9,13,17 4 View Full Answer Sumayukh Sinha answered this A.P is 5,9,13,17...... where a=5 and d=4 -3 Sumayukh Sinha answered this A.P is 5,9,13,17... where a=5 and d=4 -3 Mahi Rabbani answered this Thanks, buy the way i knew the answer but I wanna know its procedure -2
