In an AP, the first term is 8, nth term is 33 and the sum of first n terms is 123. Then, d =?
A. 5
B. – 5
C. 7
D. 3
Answer:A
In an AP, the first term is 8, nth term is 33 and the sum of first n terms is 123. Then, d =?
A. 5 B. – 5 C. 7 D. 3