When a positive integer n is divided by 5 the remainder is 2. What is the remainder when the number 3n is is divided by 5 ?

Directions: The bar graph given below shows the production (in ' 000 tones) of rice of a country for the year 2007 to 2011. Study the graph carefully and answer the question given below it.

What is the percentage increase in the production of rice in the year 2008 in comparison to the year 2007? 

If $$x=(\sqrt2+1)^{1\over3} $$, the value of $$(x^3-{1\over {x^3}}) $$ is

The ratio of the sides of a triangle is $$ {1\over2}$$: $$ {1\over3}$$: $$ {1\over4}$$ and its perimeter is 104 cm. is. What is the length of the longest arm?

Pie chart shows the percent of money spent by family on various item during 1999. Study the graph and answer these questions.

Graph shows that the maximum amount was spent on

Direction: what should come in place at question mark(?).

$$ {\sqrt{4489}+(71)^{2}-(?)^{2}=2707}$$

If $$ {9^{x}={9\over {3^{x}}}}$$ then find the value of x.

A can built a wall in 8 days while B can destroy the same wall in 3 days. A start the work and worked for 6 days, during the last 2 days of which B also joins him. In how many days A can finish the remaining work alone?