^@ABCD^@ is a square with each side measuring ^@100 \space cm^@. ^@M^@ is a point on ^@CB^@ such that ^@CM = 25 \space cm^@. If ^@N^@ is a variable point on the diagonal ^@DB^@, find the least value of ^@CN + MN^@.

ABCD is a trapezium with sides AB and CD being parallel to each other. If P and Q are the midpoints of the diagonals of this trapezium, than which of the following statement is true:

Draw a circle with its two chords ^@AB^@ and ^@CD^@ such that ^@AB^@ is not parallel to ^@CD^@. Draw the perpendicular bisector of ^@AB^@ and ^@CD^@. At what point do they intersect each other.

If Abrar drives at two third of her usual speed, she covers a certain distance in 2 hours more than the time she takes while driving at her usual speed. Find the time taken by her to cover this distance with her usual speed.