The following are the scores obtained by 11 players in a cricket match 7,21,45,12,56,35,25,0,58,66,29. Find the median score.

The marks scored by 5 students in a test for 50 marks are 20,25,30,35,40. Find the S.D for the marks. If the marks are converted for 100 marks, find the S.D. fro newly obtained marks.

Find the median of the scores 75, 21, 56 , 36 , 81 , 05, 42

Find the area of the pentagon whose vertices are A(1,1),B(7,21),C(7,-3),D(12 ,2), and E(0,-3)

Examine each of the following relations given below and state in each case, giving reasons whether it is a function or not ? (i) R={(4,1),(5,1),(6,7)} (ii) R={(2,3),(2,5),(3,3),(6,6)} (iii) R={(1,2),(2,3),(3,4),(4,5),(5,6),(6,7)} (iv) R={(1,1),(2,1),(3,1),(4,1),(5,1)}