They can be arranged in the following patterns...
OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOO
OOOOOOOO
OOOOOOOO
OOOOOO
OOOOOO
OOOOOO
OOOOOO
OOOO
OOOO
OOOO
OOOO
OOOO
OOOO
OOO
OOO
OOO
OOO
OOO
OOO
OOO
OOO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
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24 ways.
24 different ways....
4 x 3 x 2 x 1 = 24 ways This can be quickly worked out on your calculator using the ' ! ' button after inputting the number of letters/numbers. You can always check as well, by simply working out every single way.
The first object in the row can be any one of the 4 objects. For each of those . . .The second one in the row can be any one of the remaining 3 objects. For each of those . . .The third one in the row can be either of the remaining 2 objects.The total number of different arrangements is (4 x 3 x 2) = 24 ways.
24 Ways, 4 x 3 x 2 x 1 = 24