P is a point outside the circle with centre O. If a straight line drawn through P intersects the circle at points A and B such that and 900 < ∠AOB < 1200, which of the following could be the radius (in cm) of the circle?
Correct Answer : C
Find the total number of ways in which a black square and a white square can be selected from a chessboard such that both the squares lie either in the same row or in the same column.
In the above triangle ABC, find the co-ordinates of the foot of the perpendicular drawn from B to AC.
Find out the number of ways in which 6 rings of different types can be worn in 3 fingers?