If X and Y are prime numbers, then which of the following cannot be the the sum of X and Y?
If Tk. 4,500 was invested in a share when the price per share was Tk. 9 and Tk. 3,000 was invested in another share when the price per share was Tk. 10. What was the average price per share purchased?
It costs X taka each to make the first thousand copies of a CD and Y taka to make each subsequent copy. How many taka will it cost to make Z copies (Z is greater than 1000) of the CD?
111xx+y
In the picture area of the square ABCD is 196 square miles.O is the center of the circle of the circle.What will be the area of the circle in square miles ?
A motorcycle costs Tk. 2500 when it is brand new. At the end of each year it is worth 4/5 of what it was at the beginning of the year. What is the motorcycle worth when it is 3 years old?
A warehouse has 20 packers.Each packer can load 1/8 of a box in 9 minutes. How many boxes can be loaded in 112 hours by all 20 packers ?
If X, Y and Z are chosen from the three numbers 2, -3 and 1/2, then what is the largest possible value of the expression (X/Y) *Z2?