Get into a new Command Window, and type rand to get a random real number. Make a note of the number

 Get into a new Command Window, and type rand to get a random real number. Make a note of the number. Then, exit MATLAB and repeat this, again making a note of the random number; it should be the same as before. Finally, exit MATLAB and again get into a new Command Window. This time, change the seed before generating a random number; it should be different.