
( a+x  ax )/( a+x + ax ) ...

The minute and hour hands of the clock meet at 12 o'clock What is the next time they meet? ...

YOu have a coin which is biased say 75%chance of heads. How do use this coin for an unbiased decision! (can it be done?) ...

find the domian of the function::: f (x) = [ log 0.3 (x2  1) / x2  3x + 2 ]1/2 ...

What is the number of rectangles on a chess board? ...

What is the number of noncongruent Rectangles in a chess board? ...

find maximum and minimum values of f(x)=x/(1+xtanx) ...