roro_xo
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Can someone please help me with this question: binomial expansion.

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Last edited by roro_xo; 1 month ago
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Theloniouss
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That's binomial expansion, I assume.

What have you tried, and where are you stuck?
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Sam_R9
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(Original post by roro_xo)
Can someone please help me with this question: binomial distribution.

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It's simple
Where are you stuck?
Can you post your working?

Btw, I guess this is binomial expansion which comes under core/ pure mathematics. Binomial distribution comes under statistics.

Have you studied the basic concept of binomial expansion yet?
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roro_xo
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(Original post by Sam_R9)
It's simple
Where are you stuck?
Can you post your working?

Btw, I guess this is binomial expansion which comes under core/ pure mathematics. Binomial distribution comes under statistics.

Have you studied the basic concept of binomial expansion yet?
Hii, thank you for replying. Yes I've learnt the basic concepts but I'm just not sure how to simplify an expression as seen below.

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Plücker
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(Original post by roro_xo)
Hii, thank you for replying. Yes I've learnt the basic concepts but I'm just not sure how to simplify an expression as seen below.

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You might find it helpful to know that things like pC2 can be written as \frac{p(p-1)}{1 \times 2}

Another example nC4= \frac{n(n-1)(n-2)(n-3)}{1 \times 2 \times 3 \times 4}

You cannot rewrite (p-2)! as p! x (-2)!
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roro_xo
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(Original post by Plücker)
You might find it helpful to know that things like pC2 can be written as \frac{p(p-1)}{1 \times 2}

Another example nC4= \frac{n(n-1)(n-2)(n-3)}{1 \times 2 \times 3 \times 4}

You cannot rewrite (p-2)! as p! x (-2)!
Thank you so so much! This really helped a lot (:
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