IGCSE NORMAL EXT. MATHS (FAST QUESTION!)

[saleemsamer]

hey guys i would like to ask q5 p4 m/j 09
and plz if u can show me the graph
and also q8 same paper, i would also like some explanatin plz (im weak in these topics  )
thx in advance

[astarmathsandphysics]

When I get up

[SGVaibhav]

hey guys i would like to ask q5 p4 m/j 09
and plz if u can show me the graph
and also q8 same paper, i would also like some explanatin plz (im weak in these topics  )
thx in advance

why does it have to be 2009 may june paper
that is the only paper i dont want to see again....

[astarmathsandphysics]

q5 attached

q8.p=1/20 q=19/20
both are faulty=1/20*1/20=1/400
only one is faulty
1st can be faulty, 2nd ok 1/20*19/20=19/400
or 1st can be ok, 2nd one faulty 19/20*1/20=19/400
19/400+19/400=19/200

[saleemsamer]

THX astar but i would like the full q5 question plz im not understanding the second parts

[astarmathsandphysics]

I did answer those

[astarmathsandphysics]

Wait few mins

[astarmathsandphysics]

here

[saleemsamer]

thx alot  mybe cuz the 1st file wasnt downloading