Permutations and Combinations
Interactive practice questions
True or False:
The Binomial Theorem can be written in condensed form as:
$\left(a+b\right)^n=\sum_{r=0}^n\binom{n}{r}a^{n-r}b^r$(a+b)n=n∑r=0(nr)an−rbr
True
A
False
B
Easy
< 1min
Consider the binomial expansion of $\left(x+\frac{1}{x}\right)^n$(x+1x)n.
Easy
4min
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