5. If 18, a, b, -3 are in A.P then a =b =A) 4, 11B) 11, 4C) 2,12D) 12,

1.	5. If 18, a, b, -3 are in A.P then a =b =A) 4, 11B) 11, 4C) 2,12D) 12,2
Answer» no b Given 18, a, b, -3 So, a - 18 = b-a = -3 - bSo a - 18 = b-a2a - b = 18 ......(1) b-a = -3 -ba -2b = 3 ......(2) Solving (1) and (2) we get, eq (1) - 2× eq(2)2a - b = 182a -4b = 6 So , -b + 4b = 124b = 12b = 3Therefore, a = 3 + 2ba = 3 + 6 = 9So, no option is correct as a = 9 and b = 3 u go frst Sorry for inconvenience there are some calculations mistake is previous one

5. If 18, a, b, -3 are in A.P then a =b =A) 4, 11B) 11, 4C) 2,12D) 12,2

Answer»

no b

Given 18, a, b, -3 So, a - 18 = b-a = -3 - bSo a - 18 = b-a2a - b = 18 ......(1)

b-a = -3 -ba -2b = 3 ......(2)

Solving (1) and (2) we get, eq (1) - 2× eq(2)2a - b = 182a -4b = 6

So , -b + 4b = 124b = 12b = 3Therefore, a = 3 + 2ba = 3 + 6 = 9So, no option is correct as a = 9 and b = 3

u go frst

Sorry for inconvenience there are some calculations mistake is previous one