Which of these are Arithmetic Progressions and why?
(a) 2,3,5,7,8,10,15,……..
(ii) 2,5,7,10,12,15,……..
( c) `-1,-3,-5,-7`,………

Which of the following sets are equivalent? A = {2, 4, 6, 8, 10}, B = {1, 3, 5, 7, 9}

Let A={3,4,7,8} and B={1,7,10}. Which of the following sets are relations from A to B ? (i) R_1={(3,7),(4,7),(7,10),(8,1)} (i) R_(2)={(3,1),(4,12)} (iii) R_3={(3,7),(4,10),(7,7),(7,8),(8,11),(8,7),(8,10)}

What is the mode of the observations 11,8,10,8,15,6,7,8,12,7 and 9.

Find the rank of the matrix math [(4,4,0,3),(-2,3,-1,5),(1,4,8,7)]

The range of the following set of observations 2,3,5,9, 8, 7, 6, 5, 7, 4, 3 is

Find mean deviation about the mean for the following data : {:("x"_(i),2,5,6,8,10,12),("f"_(i),2,8,10,7,8,5):}

A={1,2,3,4,5,6,7,8,9,10}, B={2,3,5,7}. Find A cap B

The sum of n terms of two arithmetic progressions are in the ratio (3n + 8) : (7n + 15). Find the ratio of their 12^("th") terms.

Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range. (i) {(2,1),(5,1),(8,1),(11,1),(14,1),(17,1)} (ii) {(2,1),(4,2),(6,3),(8,4),(10,5),(12,6),(14,7)} (iii) {(1,3),(1,5),(2,5)}