The nth term of an Arithmetic Progression (A.P.) is 2n + 5. The 10th term is :

1. 7

2. 15

3. 25

4. 45

The first term of an A.P. is 7 and the common difference is 3. The general term of the A.P. is:

1. T_n = 3n − 4

2. T_n = 2n + 5

3. T_n = 3n + 4

4. None of these

If 70, 75, 80, 85 are the first four terms of an arithmetic progression, then the 10th term is:

1. 35

2. 25

3. 115

4. 105

The A.P. 6, 13, 20, …, 216 has 31 terms. The middle term of the A.P. is :

1. 91

2. 97

3. 107

4. 111