14 choose 4

الحلّ

14 C 4

1001

خطوات الحلّ

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

n = 14, r = 4

استبدل

= \frac{14 !}{4 ! ( 14 - 4 ) !}

\frac{14 !}{4 ! ( 14 - 4 ) !} = 1001

= 1001

C (12, 9)

P (11, 8)

in t er q u a r t i l e 7.7, 8.4, 9, 8, 6.9

35 C 2

32 C 4