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A box contains two pair of socks of two colours (black and white). I have picked out a white sock. I pick out one more with my eyes closed. What is the probability that I will make a pair?

Answer:

Given the number of socks in the box = 4

Let B and W denote black and white socks respectively.

Then we have

S = {B, B, W, W}

If a white sock is picked out, then the total no. of socks left in the box = 3

Number of white socks left = 2 – 1 = 1

Probability of getting white socks = number of white socks left in the box/ total number of socks left in the box

= 1/3

"hey guys welcome to lido q a video
i am vineeth your lido tutor bringing
this question to you
in the given figure l and m are two
parallel lines
intersected by another pair of parallel
lines p
and q so that triangle abc is equal to
is congruent to triangle cda
therefore from the figure
we can say in triangle
abc and triangle
adc ac equal to ac
common side
right angle cad
equal to angle a
cb
alternate angles
and angle
bac is equal to angle
ac d again
alternate angles
therefore so this angle and this angle
is equal this angle
and this angle are equal
right now
in the triangle this side is included
ac is included
side between
the equal angles
right therefore by
a s a congruency
triangle abc is congruent to
triangle cda isn't it guys
right so that's that
so if you have a dog please leave a
comment below
do like the video and subscribe to our
channel i'll see you in our next video
until then bye guys keep practicing"

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