ABCD is a trapezium with sides AB and CD being parallel to each other. If P and Q are the midpoints of the diagonals of this trapezium, and AB = 13 cm and CD = 9 cm, find the length of segment PQ.
A.
11 cm
B.
2 cm
C.
Can not find PQ because AD is not perpendicular to AB
AB and AC are two chords of a circle such that AB = 2AC. If distances of AB and AC from the centre are 2 cm and 4 cm respectively, find the area of circle. (Assume π = 3)
In a class of 16 students, the average marks in a test was 57. If Pradip got 56 marks and Rajesh got 16 marks, what were the average of the other 14 students?
There are 4 badges belonging to 4 students. The badges were put into a box, and each student pulls out a badge one after the other. What is the probability that each student gets his or her own badge?