What is the value of ½ % in decimals ?

Raju ate part of a pizza and Adam ate part of the remaining pizza. Then Renu ate part of the pizza that was left. What fraction of the pizza is still left?

The value exponential form of  

When 0.090909.....is converted into a fraction, then the result is

What is the degree of the differential equation

The numerator of a fraction is 3 more than the denominator. When 5 is added to the numerator and 2 is subtracted from the denominator, the fraction becomes . When the original fraction is divided by, the fraction so obtained is: