How many numbers lying between 20 and 200 are divisible by 4?

1. 43

2. 44

3. 45

4. 46

The common difference of the A.P. $\dfrac{1}{k}, \dfrac{1 - k}{k}, \dfrac{1 - 2k}{k}$, …… is :

1. −k

2. k

3. 1

4. −1

The last term of the A.P., 5, 12, 19, ….. having 60 terms is :

1. 406

2. 412

3. 416

4. 418

The common difference of the A.P. : $\dfrac{1}{3}, \dfrac{(1 − 3p)}{3}, \dfrac{(1 − 6p)}{3}$, … is:

1. p

2. −p

3. $\dfrac{1}{3}$

4. $\dfrac{-1}{3}$