do questions like this actually come up,
and also will the children have advanced level codes for the bucks exams.
Yes, each section of types will always have a few harder questions towards the end of each section.
The difficulty level worries me as at present my ds is getting 75+ out of 80 for ie Walsh, Bright sparks both started in last few weeks.
my sons tuition centre gave him Premium series, which I believe are also 21 types seem to be challenging he got 74, 75 77, and 70 for one.
Premium are not totally 21 type friendly, not recommended.
Your son sounds as though he is doing very well with the above scores. Dont start to panic on his behalf.