What did I do wrong? (Probability)
A bag of marbles has 12 red, 7 yellow, 5 blue and 1 white. Find the probability of selecting 4 marbles from the bag where all 4 are red.
A. 1/64
B. 9/230
C. 1/4
D. 1/7590
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I got 1/12650 which isn't even an option. I did this my multiplying 1/25*2/25*3*25*4/25.
Which is not an option.
And then 12/390625 by multiplying 4/25*3/24*2/22*1/21 which is also not an option.

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Oh wow.. I put the 4 in place of 12 as the starting point.. Thanks @Vocaloid

ahh, small correction to my formula
(12/25)*(11/24)*(10/23)*(9/22)

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