You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "std_deviation", "description": "Calculates the standard deviation of a list of numbers.", "parameters": {"numbers": {"description": "The list of numbers.", "type": "List[float]"}}}, {"name": "permutation_count", "description": "Calculates the number of permutations of k elements from a set of n elements.", "parameters": {"n": {"description": "The total number of elements in the set.", "type": "int"}, "k": {"description": "The number of elements to choose for the permutation.", "type": "int"}}}]
What is the standard deviation of the list [1.5, 2.5, 3.5, 4.5, 5.5] and the number of permutations of 5 elements from a set of 6 elements?
user
assistant
[{"name": "std_deviation", "arguments": {"numbers": [1.5, 2.5, 3.5, 4.5, 5.5]}}, {"name": "permutation_count", "arguments": {"n": 6, "k": 5}}]