Verbal Reasoning - Mental Ability Questions

The distance between two cities is 30 Km. A man goes at a speed of 30 Km per hour and returns at 20 Km per hour. What is his average speed?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? a_c_e_b_de

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

DM, EN, FO, ?

 In a row of boys, Rahul’s position from the right end is 39th and Pankaj’s position from the left end is 53rd. After interchanging their position, Rahul’s position becomes 64th from the right end. How many boys are there in the row?

The weights of 4 boxes are 30, 20, 50 and 90 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

Out of the 100 nature lovers, 20 people wanted to see only bison, 30 wanted to see both bison and tiger, 15 wanted to see only leopard, 25 wanted to see only tiger, 5 wanted to see both bison and leopard and the remaining wanted to see only bear.

The ratio of people to wanted to see tiger to those who wanted to see bear is

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
A, C, F, H, K, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
C A E, F D H, I G K, ?