If the number 413283759387 is divisible by 13, then what is the value of P?

The surface area of a cube is equal to that of a sphere. If x…

∆ABC is a triangle right angled at A and AD is perpendicular to BC. If…

Two isosceles triangles have equal vertical angles and their areas are in the ratio 4·84…

∆ABC is similar to ∆DEF. The perimeters of ∆ABC and ∆DEF are 40 cm and…

In a trapezium ABCD, AB is parallel to DC. The diagonals AC and BD intersect…