Three pair of socks are
placed in a box.If two
socks are drawn at
random from the box
What is the probability
(a)of drawing a match
pair
(b)of drawing a socks
for the left and right
feet
(c)of drawing two socks of
the right feet
d)drawing two socks of
left feet
(e)drawing socks of the
same feet
if in the expansion of (1+x)^n the
coefficient of x^9 is the aritmetic
mean of the coeficients of x^8 and
x^(10) . find the possible value
of n where n is a positive integer