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Where Can I Find 6C4? [Solved]
6C4=6C6−4=6C2=2×16×5=15.
Short Trick to Calculate “nCr” for Combination Questions by JP Sir
In this video you’ll learn how to calculate nCr quickly.
nCr without a calculator for Core or Stats - A-level maths revision video
This video talks through how to find nCr, or combinations, without a calculator by cancelling the factorial parts of the answer.
Combination using the calculator Casio fx-991ES
This video will show you through an example how to calculate a combination using your Casio fx-991ES.
