If 3x²-5x+1=0, then the value of ( $$x^2+{1\over 9x^2}$$) is 

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

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

What is the compound interest on ₹24,000 for 2 years at the rate of 10% per annum, if interest is compounded annually?

The difference between B a discount of 30% on ₹2,000 and two successive discounts of 25% and 5% on the same amount is 

The following bar graph shows the number of girls in a school over 5 years.

Find the percentage decrease in the number of girls from the year 2012 to the year 2013.

Directions : A bar graph showing the heights of six mountain peaks is given below. Study the bar graph and answer the questions. 

When the heights of the given peaks are written in ascending order, what is the average of the middle two peaks? 

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?