there are 5 possible answers for each question of a multiple choice exam containing 10 questions. if a condidate answered it randomly. find the probability that he gets (i) no question right (ii) 3 questions right (iii) 5 questions right (iv) at least one question right


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Question Number 47837 by Aknabob1 last updated on 15/Nov/18

$t h e r e a r e 5 p o s s i b l e a n s w e r s f o r e a c h q u e s t i o n o f a$ $m u l t i p l e c h o i c e e x a m c o n t a i n i n g 10 q u e s t i o n s .$ $i f a c o n d i d a t e a n s w e r e d i t r a n d o m l y .$ $f i n d t h e p r o b a b i l i t y t h a t h e g e t s (i) n o q u e s t i o n r i g h t$ $(i i) 3 q u e s t i o n s r i g h t (i i i) 5 q u e s t i o n s r i g h t$ $(i v) a t l e a s t o n e q u e s t i o n r i g h t$
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