In permutation n p r and combination n c r n is the total number of objects and r is the sample size Where r. N r C nr dfrac n r. ATT shares purchased prior to the Lucent spin-off in September 1996.
Combinations nCr are the number of combinations of numbers that can be put together where the order that they are selected doesnt matter and numbers are not repeated.
N r C nr dfrac n r. NCr you can either highlight the 3 or just press the 3 button. In other words the total number of people multiplied by the number of handshakes that each can make will be the total handshakes. Here are the steps to follow when using this combination formula calculator.