Seven cards each containing one of the following letters C, B, T, A, E, M and H are placed in a hat. Each letter is used only once. Stu will pull four cards out at random and without replacement. What is the probability that Stu pulls out M, A, T, H in this order? Express your answer as a common fraction.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Seven cards each containing one of the following letters C, B, T, A, E, M and H are placed in a hat. Each letter is used only once. Stu will pull four cards out at random and without replacement. What is the probability that Stu pulls out M, A, T, H in this order? Express your answer as a common fraction.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\frac{1}{840}
Seven cards each containing one of the following letters C, B, T, A, E, M and H are placed in a hat. Each letter is used only once. Stu will pull four cards out at random and without replacement. What is the probability that Stu pulls out M, A, T, H in this order? Express your answer as a common fraction.
train