Question

Question 4
A bag contains 40 balls out of which some are red, some are blue and remaining are black. If the
probability of drawing a red ball is 11120 and that of blue ball is 15. The number of black balls
is​

Answer 1

Answer:

Number of red ball=11/20×40=22

Number of blue ball=1/5×40=22

Number of black ball=40-22-8=10