Question
A box contains only three colors of balls- red, green
and blue. What is the minimum number of balls that should be picked from the box to ensure that at least 5 red balls or at least 7 green balls or at least 9 blue balls are picked?Solution
If we pick at least 4 red balls, 6 green balls and 8 blue balls from the box, the total number of balls picked from the box will be 18. If one more ball is picked from the box, irrespective of what it is, it can be said that at least 5 red balls or at least 7 green balls or at least 9 blue balls have been picked from the basket. Hence, required number of balls = 18 + 1 = 19
How many students from Delhi who got scholarship in the years 2013, 2014 and 2017 together?
What is the total number of students who got scholarship from Delhi in the year 2015 and who do not got scholarship from Assam in the year 2013?
What is the ratio of the total number of students who do not got scholarship in the years 2013 and 2015 from Delhi to same years from Assam?
The total number of students from Delhi who got scholarship is approximately what percent of the number of students from Assam who got scholarship in ye...