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Mathematics 22 Online
OpenStudy (anonymous):

True or false? EXPLAIN! :)) 2. The number of permutations of two items from a data set is always two times the number of combinations when taking two objects at a time from the same data set.

OpenStudy (anonymous):

Help! :c

OpenStudy (anonymous):

yes it is true..

OpenStudy (anonymous):

Can you please explain? :)

OpenStudy (anonymous):

|dw:1336549069228:dw| by formula...

OpenStudy (anonymous):

use the expansion of the expressions nP2 and nC2,to check...

OpenStudy (anonymous):

OOh ok! thanks for your help :)

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