How many subsets in a set? (2 of 2: Combinatorial proof)

[SeeTv.]

This is one of my all time favorite propfs because after substituting 1 the answer immediately appears which is s "whoa what just happened?!" moment.

[AdamLaMore]

I thought I was so clever pointing this out in a comment on yesterday's video, but you were one step ahead as always, Mr. Woo! Enjoy your weekend!

[mxlexrd]

If you want an easier proof, you should just notice that for each of the n elements, you have 2 choices: either it's in the set or it's not in the set. So you have 2 choices, n times, which means the total number of options is 2^n.

[magick]

it's just easier to note that every member has 2 options either to be included or to be excluded. and therefore there are 2 to the power of the number of members subsets.

[himanshumaurya]

I want to study from you for entrance examination of IIT i.e. JEE mains and advance.

[himanshumaurya]

Sir please teach for IIT examination, which is one of the most difficult examination in India.

[kanishkaasde]

Sir, I recently found your channel 😅
Can you suggest something for JEE Mains and Advanced for your followers who wants this
Atleast some tips ✌🏼🙂

[srikantadash]

Sir, which is the best book or website to became a math teacher ? "PLEASE REPLAY"

[suryakumarijuthuka]

I love maths but i am studying for chartered accountant 😕

[ahzaanwari]

If Eddie woo got 85 views in 16 minutes, how many views Will he get on 14 days?

[تيتانالصغيره-كب]

Why can't you find an Arabic translation?