if you know that the probability of a picture appearing when acoin is tossed is 2/5 then the probability of getting writings when this coin is tossed 6 times ?


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Question Number 144801 by mohammad17 last updated on 29/Jun/21

$i f y o u k n o w t h a t t h e p r o b a b i l i t y o f a p i c t u r e$ $a p p e a r i n g w h e n a c o i n i s t o s s e d i s 2 / 5$ $t h e n t h e p r o b a b i l i t y o f g e t t i n g w r i t i n g s$ $w h e n t h i s c o i n i s t o s s e d 6 t i m e s ?$
Commented by mohammad17 last updated on 29/Jun/21

$h e l p m e s i r ?$
Commented by mohammad17 last updated on 29/Jun/21

$? ? ? ? ? ? ? ? ?$
	Answered by gsk2684 last updated on 29/Jun/21

	$X \approx B (n, p)$ $p = {prob}^{'} of getting writings$ $on the coin = \frac{3}{5}$ $q = {prob}^{'} of getting picture$ $on the coin = \frac{2}{5}$ $then p (X ⩾ 1) = 1 - p (X = 0)$ $= 1 - 6_{C_{0}} q^{6} p^{0} = 1 - {(\frac{2}{5})}^{6}$
	Commented by mohammad17 last updated on 29/Jun/21

	$s i r i w a n t t h e r e s u l t$
	Commented by SLVR last updated on 29/Jun/21

	$v e r y . . . e a s y . . = 15561 / 15625$
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