question_answer

Box contains \[2\] one rupee, \[2\] five rupee, \[2\] ten rupee and \[2\] twenty rupee coin. Two coins are drawn at random simultaneously. The probability that their sum is \[Rs.\,\,20\] or more, is

A) \[1/4\]                                 

B) \[1/2\]

C) \[3/4\]                                 

D) \[1/8\]

Correct Answer: B

Solution :

 Let A be the event such that sum is \[Rs.\,\,20\] or more \[\therefore \]\[P(1)=1-P\](Total value is\[<20)\]