Direction: What value will come in place of the question mark (?) in the following question?

14, 15, 31, 94, 377, ?

If $$ {x+{1\over x}=7}$$ then $$ {x^{2}+{1\over {x^{2}}}=?}$$

Two successive discounts of 20% and 30% are given while selling an article. What is the ratio of the marked price of the article to its selling price?

Each exterior angle of a regular polygon measures 9°. How many sides does the polygon have?

Natu and Buchku each have certain number of oranges. Natu says to Buchku, “If you give me 10 of your oranges, I will have twice the number of oranges left with you”. Buchku replies,“If you give me 10 of your oranges, I will have the same number of oranges as left with you”. What is the number of oranges with Natu and Buchku, respectively?

Directions: A survery of film watching habits of people living in five cities P, Q, R, S and T is summarised below in a table. The coulmn I in the table gives percentage of film-watchers in each city who see only one film a week. The column II gives the total number of film-watchers who see two or more films per week.

Read the table and answer the following questions.

The total number of all film-watchers in the five cities who see only one film in a week is 

The simple interest on a sum for 5 years is one fourth of the sum. The rate of interest per annum is

The average of two numbers is 62. If 2 is added to the smaller number, the ratio of the numbers becomes 1 : 2. What is the difference between numbers?