Q. 123.5( 2 Votes )
Ram put some buttons on the table. There were 4 blue, 7 red, 3 black and 6 white buttons in all. All of a sudden, a cat jumped on the table and knocked out one button on the floor. What is the probability that the button on the floor is blue?
Total number of buttons = 4 + 7 + 3 + 6
⇒ Total number of buttons = 20
⇒ Total number of outcomes = 20
Number of blue buttons = 4
⇒ Total number of favourable outcomes = 4
Hence, the probability that the button on the floor is blue is .
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