There are two boxes, one containing 10 red balls and the
other containing 10 green balls. You are allowed to move the
balls between the boxes so that when you choose a box at
random and a ball at random from the chosen box, the
probability of getting a red ball is maximized. This maximum
probability is??
a)37/38
b)14/19
c)3/4
d)½

pakhi: dn't demorolize sm one, plz consult a psychatrist, ur
mental situation is n't gud,
Anusha: u hav asked a gud question, but in d ques given
above, asked for maximum probablity, which can only b
achieve by transvrng n-1 balls, where n is the bal in a bag.

why shud we keep only 1 ball in 1st box we can take 2 balls
in 1st nd move 8 red balls to 2nd box thn the answer
changes........no suuficient data in the question

10 points are chosen on a plane. Every possible pair of
points is joined by a line and the midpoint of the line is
marked with red colour. What is the minimum possible number
points on the plane which have been marked with red colour?

Grass in lawn grows equally thick and in a uniform rate. It
takes 24 days for 70 cows and 60 days for 30 cows to eat
the whole of the grass.
How many cows are needed to eat the grass in 96 days?