If the sum of first n terms of an AP is 3n2-5, then the third term is

a. 30 b.-15 c. -30 d.15

ii. If a,b,c a

If the sum of first n terms of an AP is 3n2-5, then the third term is

a. 30 b.-15 c. -30 d.15

ii. If a,b,c are in AP then b =——–

a.

−

2
b. −

2

c.

+

2

d. +

2

iii. Find the 6th term from the end of the AP: 17, 14, 11……..-40

a. -25 b. -20 c. -15 d. 15

iv. In the following AP, find the missing terms: 5, ——-, ——-, 91

2

a.

13

2

, 8 1

2

b. 13

2

,

16

2

c.

16

2

,

13

2

d. 8 1

2

,

13

2​