The sum of the numerator and denominator of a fraction is 11. If 1 is added to the numerator and 2 is subtracted from the denominator, it becomes 2/3 . The fraction is

A fraction is such that if double the numerator and triple the denominator are changed by +10% and −30% respectively, the result is 11% of 16/21. The fraction is

Which of the following numbers is not between 1/3 and 1/2?

If 1/5 of 3/4 of a 1/3 of the number is 24, then 20% of that number is %

A pizza boy delivered two-fifths of his pizzas on day 1, three-fourths of his pizzas on day 2 and 9/16 of his pizzas on day 3. On which day did he deliver the most pizzas if he had the same number of…

The value of 1/2 + 1/6 + 1/12 + 1/20 + 1/30 + ... + 1/[n(n+1)] is equal to