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Q 2225467361.     Directions: Read the following passage carefully to solve the following questions.
A box contains 5 black, 1 white, some blue and some red balls.
The probability of picking out 1 blue ball is 1/5 and probability of picking out 1 red ball is 1/2.
What is the probability of picking out 1 black ball from the box?
IBPS-PO 2017 Mock Mains
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)