51. Specimen OCR Additional Maths paper q1 to 10.

Please have a go at this specimen paper before watching this video. I go through how to solve these questions in ways which match my videos, and explain which videos to watch if you want more practice with any specific skill. If there are any which you would like further help/explanation - please comment below.
See here for the paper (under sample assessment materials):

[thesislegogroup]

Thanks sir, relieved to know that the questions I found difficult are those that you thought were difficult (5 and 10b)

[zakir]

For question ten part b, would it be right to say
U can have letter letter digit digit, so 3x2x4x3=72
But then there’s 4C2=6 ways to arrange letter letter digit digit
So we get 72x6=432 as the amount of different passcodes

[mathgeek]

Q 5 (a) would you lose a mark if you didn’t put the co - ordinates within the graph

[mathgeek]

For Q 4 would you drop a mark if you did put units^2

[schoolaccgeorgecl]

Sir for q2 I don't understand why you don't do 5C3 for choosing all the ways you can do 3x * 3x* 3x and then 5C2 for all the ways you can do 2*2 so i got 10800 not 1080

[confirmingselection]

Sir how do you get 135m for the height in q5?