10 nCr 4

Solución

10 n C r 4

210

Pasos de solución

= \frac{n !}{r ! ( n - r ) !}

Sustituir

n = 10, r = 4

= \frac{10 !}{4 ! ( 10 - 4 ) !}

\frac{10 !}{4 ! ( 10 - 4 ) !} = 210

= 210

8 P 5

s im pl i f y 9 C 3

15 C 6

m e d ian 15, 20, 35, 20, 10

13 p 8