Which of the following is the capital of Ethiopia?

In the following question, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word.

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement". 
 
she thought she (have rediscovered) her real self after a long time

In the following question, select the related letter/letters from the given alternatives.

WYV : PRN : : TPJ : ?

What is the value of (91 + 92 + 93 + ......... +140)?

If the ratio of the cost price and the selling price of an article be 4:5, then the percentage of profit is:

A bag has Rs 43 in the form of 5-rupee, 50-paise and 10-paise coins in the ratio of 1:5:11. What is the total number of 50-paise coins?

Ticket for an adult is Rs 1600 and a child is Rs 600. 1 child goes free with two adults. If a group has 17 adults and 7 children what is the discount the group gets?