For the following two (02) items:
Consider the equation abx² + bcx + ca = cax² + abx + bc

If the roots of the equation are equal, then a, b, c are in

For the following two (02) items:
Let ( 6 + 10 + 14 +... up to m terms) =( 1 + 3 + 5 + 7 +... up to n terms)
where m < 25 and n < 25

What is the relation between m and n?

For the following two (02) items:
Let ( 6 + 10 + 14 +... up to m terms) =( 1 + 3 + 5 + 7 +... up to n terms)
where m < 25 and n < 25

How many values of m are possible?

For the following two (02) items:
There are 8 points on a plane out of which 4 points are collinear.

How many triangles can be formed by joining these points?