Three Basic Mensa Logic Problems

1.The top equilateral triangle shown in Fig. 1(a) is rotated clockwise through 60 degrees, then 60 degrees counterclockwise, 

Then through 360 degrees clockwise. Sketch what the new orientation look like.

2) Referencing the square shown in Fig. 2,   below,

One can apply the following operations, each of which can alter its orientation:

R1: Rotation clockwise by 90 degrees
R2: rotation clockwise by 180 degrees
R3: rotation clockwise by 270 degrees
M1: Mirrors corners exactly through the midline of the square
M2: Mirrors two opposing diagonal corners: from top left to bottom right
M3: Mirrors two opposing corners in the opposite sense to M2

If we apply the sequence of operations to the square in the order identified below:

R2 M1 M3

Then predict the result - assuming the square in Fig. 2 is given by ABCD.

3)Examine the sequence of steps in Fig. 3a  below and the possible next configuration in Fig.. 3b, below that. 

The new configuration (lower panel) will most likely be that for:

A)      B)       C)        D)