Answers:
(i)
A be the Arithmetic mean
7, A, 13 are in AP
A-7 = 13-A
2A = 13 + 7
A = 10
(ii)
A be the Arithmetic mean
12, A, – 8 are in AP
A – 12 = – 8 – A
2A = 12 + 8
A = 2
Answers:
(i)
A be the Arithmetic mean
7, A, 13 are in AP
A-7 = 13-A
2A = 13 + 7
A = 10
(ii)
A be the Arithmetic mean
12, A, – 8 are in AP
A – 12 = – 8 – A
2A = 12 + 8
A = 2