In how many ways can 10 people be seated in a row if 1) there are no restrictions on the seating arrangement? 10! 2) there are 4 men and they must sit next to each other? 3) there are 5 married couples and each couple must sit together? 5! * 2!^5

#If you're not sure how to start, look at the swap_red_blue and blur#examples below. #Problem A: Invert Colorsdef invert(img_matrix):    '''    Purpose:      Inverts the colors in an image by setting each color component to      255 minus its original value.    Input Parameter(s):      A 3D matrix (list of lists of lists) representing an .bmp image      Each element of the matrix represents one row of pixels in the image      Each element of a row represents a single pixel in the image      Each pixel is represented by a list of three numbers between 0 and 255      in the order [red, green, blue]    Return Value:      A 3D matrix of the same dimensions, with the colors of each pixel inverted    '''    #TODO: Finish this function

Implement