Answer:
1/36
Explanation:
The probability of it landing on any specific color is 1/6, but it could land on any other color after that. The probability of landing on any color after the first is also 1/6. So, we multiply 1/6*1/6 to get our answer of 1/36. Here is a table visually representing what we just did, with G representing green, O representing orange, B representing blue, Y representing yellow, R representing red, and P representing purple. I've also bolded every other entry to make it easier to see, and also italicized the value we're looking for.
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R, R . R, O . R, Y . R, G . R, B . R, P .
O, O . O, R . O,Y . O, G . O, B . O, P .
Y, Y . Y, R . Y, O . Y, G . Y, B . Y, P .
G, G . G, R . G, O . G, Y . G, B . G, P .
B, B . B, R . B, O . B, Y . B, G . B, P .
P, P . P, R . P, O . P, Y . P, G . P, B .
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If we count these, we get a total of 36 possibilities, and green and then orange (G, O) is 1/36 of these. This further proves our answer is 1/36.
Hope it helps :)