Question

Question 12

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 an knocked out one button on the floor. What is the probability that the button on the floor is blue?

(a) $\frac{7}{20}$

(b) $\frac{3}{5}$

(c) $\frac{1}{5}$

(d) $\frac{1}{4}$

Answer 1

Ans: ()
Total number of buttons = 4 + 7 + 3 + 6 = 20
probability that button on the floor is blue $=\frac{\text{Number of blue buttons}}{\text{Total number of buttons}}=\frac{4}{20}=\frac{1}{5}$