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moonman239
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I wish to calculate the number of objects in the population I'm selecting from, given that I am choosing r objects and there are nCr different combinations.
moonman239 said:I wish to calculate the number of objects in the population I'm selecting from, given that I am choosing r objects and there are nCr different combinations.
The formula for calculating n given r and nCr is n = nCr / r!
The value of nCr can be found by using the formula nCr = n! / (r! * (n-r)!), where n represents the total number of items and r represents the number of items being chosen.
Yes, most scientific calculators have a function for calculating nCr, which can then be used to find the value of n.
n represents the total number of items in a set, while r represents the number of items being chosen from that set.
No, the nCr formula is only applicable for positive integers. For non-integer values, you will need to use a different formula or approximation method.