nCr = n! r! (n − r)! , donde r ≤ n, n! = n × (n − 1) × ... × 3 × 2 × 1, y 0! = 1.
No es hasta n = 23, que un valor excede de un millón: 23C10 = 1144066. ¿Cuántos, no necesariamente distintos, valores de nCr, para 1 ≤ n ≤ 100, son mayores que un millón?
combinatoricSelections(1000)
deben devolver 4626.
testString: 'assert.strictEqual(combinatoricSelections(1000), 4626, "combinatoricSelections(1000)
should return 4626.");'
- text: combinatoricSelections(10000)
deben devolver 4431.
testString: 'assert.strictEqual(combinatoricSelections(10000), 4431, "combinatoricSelections(10000)
should return 4431.");'
- text: combinatoricSelections(100000)
deben devolver 4255.
testString: 'assert.strictEqual(combinatoricSelections(100000), 4255, "combinatoricSelections(100000)
should return 4255.");'
- text: combinatoricSelections(1000000)
deben devolver 4075.
testString: 'assert.strictEqual(combinatoricSelections(1000000), 4075, "combinatoricSelections(1000000)
should return 4075.");'
```