Determine the following sum by using suitable rearrangement: `2+3+4+5+45+46+47+48`

Determine each of the following products by suitable rearrangements: 2\ x\ 1497\ x\ 50

Find the product of each of the following by suitable rearrangement: 2xx8xx50xx125

Using divisibility tests, determine which of the following numbers are divisible by 2;by 3; by 4; by 5; by 6; by 8; by 9; by 10 ; by 11 (say, yes or no):

Find the Q_(2) for the following distribution. 30, 42, 33, 31, 40, 45, 34, 47, 39

Let A={{1,2,3},\ {4,5},\ {6,7,8}}dot Determine which of the following is true or false: (i) {{4,5}}subA (ii) varphi in A (iii) varphisubA

Find the median of the following set of numbers : 10, 75, 3, 81, 18, 27, 4, 48, 12, 47, 9, 15

Using slopes determine which of the following sets of three points are collinear. (i) (5, -2), (7, 6), (0, -2) (ii) (-2, 3), (8, -5), (5 4)

During the medical check-up of 35 students of a class, their weights were recorded as follows: Draw a less than type ogive for the given data. Hence obtain the median weight from the graph and verify the result by using the formula. weight (in kg)=38-40 40-42 42-44 44-46 46-48 48-50 50-52 No. of students=3 2 4 5 14 4 3

Let A={{1,2,3},\ {4,5},\ {6,7,8}}dot Determine which of the following is true or false: (i) 1 in A (ii) {1,2,3}subA (iii) {6,7,8} in A

Using determinants show that the following points are collinear: (1, -1), (2, 1) and (4, 5)