Is `(16 - 4) - 2 = 16 - (4 - 2)` ? Is there on associative property for division? Discuss with your friends. Think of `(28 - 14) - 2 and 28 - (14 - 2)`.

Verify associative property of multiplication for (2)/(3), (-1)/(6) , (4)/(3)

Locate the points of discontinuity of the function: f(x) = {:{((x^4-16)/(x-2), if x ne 2),(16,ifx=2):}

The slope of the line passing through the points (3,-2) and (-1,4) is:

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : 6x+14y-16 =0, 12x + 28y - 32 =0 .

Let k be an integer such that the triangle with vertices (k ,-3k),(5, k) and (-k ,2) has area 28s qdot units. Then the orthocentre of this triangle is at the point : (1) (1,-3/4) (2) (2,1/2) (3) (2,-1/2) (4) (1,3/4)

Factorise : 25a^2 – 4b^2 + 28bc – 49c^2