Question: Select the true statements ) about counting techniques.For fixed values of n and r , nP , is always greater than or equal to ,

Select the true statements) about counting techniques.For fixed values of n and r, nP, is always greater than or equal to ,C,.The value of ,C, can be negative.The value of P, must be an integer.The expression for ,C, is valid only if all n items are different.

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