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Question Number 143435 by nitu last updated on 14/Jun/21

Commented by mr W last updated on 14/Jun/21

$p = \frac{1 334 961}{2 320 196 159 531}$
Commented by nitu last updated on 15/Jun/21

$can you show the process please$
Commented by mr W last updated on 15/Jun/21

$t o f o r m 10 p a i r s f r o m 20 p l a y e r s$ $t h e r e a r e t o t a l l y \frac{20!}{{(2!)}^{10}} w a y s .$ $t o s e l e c t 10 p l a y e r s, o n e f r o m e a c h$ $c o l l e g e, t h e r e a r e 2^{10} w a y s, a n d t o$ $a r r a n g e t h e r e m a i n i n g 10 p l a y e r s$ $s u c h t h a t t w o p l a y e r s f r o m t h e s a m e$ $c o l l e g e a r e n o t i n t h e s a m e p a i r, t h e r e$ $a r e! 10 w a y s . s o t h e a n s w e r i s$ $p = \frac{2^{10} \times! 10}{\frac{20!}{{(2!)}^{10}}} = \frac{2^{20} \times! 10}{20!}$ $w i t h! 10 = 1334961$ $i^{'} m n o t s u r e i f t h i s a n s w e r i s c o r r e c t .$ $i f y o u h a v e t h e r i g h t a n s w e r, p l e a s e$ $s h a r e i t .$
Commented by nitu last updated on 17/Jun/21

$thank you . from where i saw, they said that the answer is 0.55 appprox .$
Commented by mr W last updated on 17/Jun/21

$i^{'} l l t r y a g a i n . . .$
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