Question

A bag contains 7 red balls,6 green balls,5 black balls,4 blue balls.What is the min no.Of balls you must draw at random to get four same colour balls

Answer 1

Answer: 7+6+5+4 = 20

Probability of getting four same color ball = 4/20

Answer 2

Answer:

Minimum number to be withdrawn  to get same colour balls must be 4

Step-by-step explanation:

In this question

We have been given that

A bag contains 7 red balls ,6 green balls , 5 black balls , 4 blue balls

We have been asked what is the minimum number of balls must be withdrawn at random to get four same colour balls?

Since colour wise minimum number of balls are 4 which is of blue colour.

Hence, the minimum number of balls that must be withdrawn at random must be 4.

As there 5 black balls so 4 can be withdrawn from it.

As there 6 green balls so 4 can be withdrawn form it.

As there are 7 red balls so 4 can be withdrawn from it.

Therefore,minimum number of balls to be withdrawn be 4