A trader marked his goods at 20 % above the cost price. He sold half the stock at the marked price. one quarter at a discount of 20 % on the marked price and the rest at a discount of 40 % on the marked price. His total gain is 

The income of C is 20 % more than B's and the income of B is 25 % more than A’s. Find by how much percent is C's income more than A’s? 

A merchant sells a radio at 10 % profit if he bought 10% less and sold it Rs.132 less then he got 10% profit. Find the cost price of radio?

If $$ {\sqrt{4^{n}}=1024}$$, then the value of n is:

Directions : Given line graph shows the data of male & female population in 5 different cities. Read the data carefully and answer the questions.

If in city A, the ratio of male graduates to female graduates is 3 : 4 and total graduates in the city are 70% of total population. Find population of females who are not graduate.

If $$ {(x+{1 \over{x}})^{2}}=3$$, the value of of $$  {x^{206}+x^{200}+x^{90}+x^{84}+x^{18}+x^{12}+x^{6}+1}$$