Edexcel A level Maths: 2.4 Probability Formulae (Addition and Conditional Probability Formulas)

[@tamaradifc7566]

I was not even aware of DeMorgan's Law. Thank you Zeeshan :-)

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ZEESHAN ZAMURRED >> TLMATHS, EXAM SOLUTION, BICEN MATHS

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They act like all the legends cannot co exists.

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[@marcushitch5809]

that was so crispy

[@farhanachowdhury2778]

This video is really helpful . Thank you so much

[@crypticgod1134]

Please do mechanics

[@fasibek4508]

Yes please specifically for force and friction ☺️

[@isi6402]

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[@user-wy7pj]

really helpful, thank you!!

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what a beast

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Honestly

[@nikta3679]

cheers king

[@Bbbbbbbbbbhhhhhhh]

I’m confused about the last part. The teacher is correct because p(AnB) don’t equal p(A)? I’m finding this hard. I thought it would of been he is incorrect since Anna and Bella both being off at the same time is such a low number.

[@george1131]

what you have to do to see if two events are linked is test for independence, if they are independent then they do NOT have any link (i.e. if one happens it doesnt affect probability of other thing). So to test for independence you can use P(A|B) = P(A) or P(AnB) = P(A) x P(B), if these are true/ match up with your values then the events are INDEPENDENT. however in this case the numbers didnt align (P(AnB)= 0.1 but P(A) x P(B) = 0.12) so we say it is DEPENDENT, this means that one probability affects the other so the teacher is right in saying they are linked. hope this helps clear it up a bit :)

[@CWarsame-uc9io]

​@@george1131so if both sides are 0.1 does that mean the probability for this one has a effect on the other one ( they're depending on each other)

[@isi6402]

S1 sir please

[@farhanachowdhury2778]

Its s1 bro lolllll😂

[@isi6402]

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[@farhanachowdhury2778]

@@isi6402 I need a lect. on normal distribution

[@isi6402]

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[@farhanachowdhury2778]

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i love you