The least value of x, for which the expression x2+x+17 will not give a prime number, is
P sells a table to Q at a profit of 10% and Q sells it to R at a profit of 12%. If R pays Rs.246.40 for it, then how much had P paid for it?
A train 300 meters long is running at a speed of 25 meters per second, it will cross a bridge 200 meters long in
A sum was divided among P, Q & R. R got double than P who got double than Q. If the difference between the shares of Q and R is Rs. 3675.00, then the sum in rupees is
The denominator of a fraction is greater than its numerator by 11. If 8 is added to both its numerator and denominator, then it becomes ¾. The fraction is
If the volume of a sphere is divided by its surface area, we obtain 27 cm. The radius of the sphere is
If the ratio of the areas of two squares is 25:36, then the ratio of their perimeters is