Ram put some buttons on the table.


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?

(a) 7/20

(b) 3/5

(c) 1/5

(d) ¼



(c) 1/5

Probability = Number of blue buttons on the table / Total number of buttons on the


= 4/20 … [divide both numerator and denominator by 4]

= 1/5

Leave a comment


Click here to get exam-ready with eSaral

For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.

Download Now