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There are **12** NRICH Mathematical resources connected to **Binomial theorem**, you may find related items under Algebraic expressions, equations and formulae.

Problem
Primary curriculum
Secondary curriculum
### Tens

When is $7^n + 3^n$ a multiple of 10? Can you prove the result by two different methods?

Age 16 to 18

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Discrete Trends

Find the maximum value of n to the power 1/n and prove that it is a maximum.

Age 16 to 18

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Binomial

By considering powers of (1+x), show that the sum of the squares of the binomial coefficients from 0 to n is 2nCn

Age 16 to 18

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Telescoping Series

Find $S_r = 1^r + 2^r + 3^r + ... + n^r$ where r is any fixed positive integer in terms of $S_1, S_2, ... S_{r-1}$.

Age 16 to 18

Challenge Level

Article
Primary curriculum
Secondary curriculum
### Binomial Coefficients

An introduction to the binomial coefficient, and exploration of some of the formulae it satisfies.

Age 14 to 18

Article
Primary curriculum
Secondary curriculum
### The Harmonic Triangle and Pascal's Triangle

The harmonic triangle is built from fractions with unit numerators using a rule very similar to Pascal's triangle.

Age 16 to 18

Article
Primary curriculum
Secondary curriculum
### The Kth Sum of N Numbers

Yatir from Israel describes his method for summing a series of triangle numbers.

Age 16 to 18

Problem
Primary curriculum
Secondary curriculum
### Remainder Hunt

What are the possible remainders when the 100-th power of an integer is divided by 125?

Age 16 to 18

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Growing

Which is larger: (a) 1.000001^{1000000} or 2? (b) 100^{300} or 300! (i.e.factorial 300)

Age 16 to 18

Challenge Level