Forty is 40% less than what number
1 answer:
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Method One
Your calculator might be able to do this. Mine does it like this.
6
nCr
2
=
15
Method 2
You could simply set up 6C2
This gives you
Method Three
You only have to do this a couple of times to see how the cancellation works.
After all the cancellation takes place you have
6*5/2 = 15
Your calculator might be able to do this. Mine does it like this.
6
nCr
2
=
15
Method 2
You could simply set up 6C2
This gives you
Method Three
You only have to do this a couple of times to see how the cancellation works.
After all the cancellation takes place you have
6*5/2 = 15
