The product of 1x2x3x4x5x6 is 720. This expression represents the factorial of 6, denoted as 6!, which is the product of all positive integers up to 6. Therefore, 1x2x3x4x5x6 equals 720.
6! = 6 factorial = 1x2x3x4x5x6 = 720
Well, to calculate this you must do: 1X2X3X4X5X6=720. So there are 720 different combinations.
6 factorial which is 720 words... but some of them may not be meaningful.. if s can occupy 6 positions, c can occupy 5, h can occupy 4,o can occupy 3 , other o can occupy 2,l can only 1... using multiplicative principle 1X2X3X4X5X6=720