Twenty times a positive integer is less than its square by 96. What is the integer? a. 20            b. 24         c. 30          d. cannot be determined        e. none of these

Five times of a positive integer is equal to 3 less than twice the square of that number. Find the number.

Let a,b.c.d,e,f be positive integers such that (a)/(b) =b+f

The sum of the digits of a two digit number is 1 and the difference between the digits is 3. What is the two digit number? a. 69 b. 78 c. 96 d. cannot be determined e. none of these

The area of a square is three-fifths the area of a rectangle.The length of the rectangle is 25cm and its breadth is 10cm less than its length.What is the perimeter of the square? (a) 44cm (b) 60cm (c) 80cm (d) Cannot be determined (e) None of these

Three fourths of a numbers is equal to 60% of another number and the difference between these two numbers is 20. What is the sum of these tow numbers? 170 b.180 c.220 d. cannot be determined e.none of these

A train running at a speed of 90km/hr crosses a platform double its length in 36 seconds. What is the length of the platform in metres? 200b.300c.450d. Cannot be determined e. none of these

The least positive integer n such that ((2i)/(1+i))^(n) is a positive integer is 16b.8c.4d.2