There are 12 NRICH Mathematical resources connected to Binomial theorem, you may find related items under Algebraic expressions, equations and formulae.
Broad Topics > Algebraic expressions, equations and formulae > Binomial theorem
When is $7^n + 3^n$ a multiple of 10? Can you prove the result by two different methods?
Find the maximum value of n to the power 1/n and prove that it is a maximum.
By considering powers of (1+x), show that the sum of the squares of the binomial coefficients from 0 to n is 2nCn
Find $S_r = 1^r + 2^r + 3^r + ... + n^r$ where r is any fixed positive integer in terms of $S_1, S_2, ... S_{r-1}$.
An introduction to the binomial coefficient, and exploration of some of the formulae it satisfies.
The harmonic triangle is built from fractions with unit numerators using a rule very similar to Pascal's triangle.
Yatir from Israel describes his method for summing a series of triangle numbers.
What are the possible remainders when the 100-th power of an integer is divided by 125?
Which is larger: (a) 1.000001^{1000000} or 2? (b) 100^{300} or 300! (i.e.factorial 300)