The LGV theory test questions and answers has the following -
A drivers week is defined as
Amongst the options there is the correct answer - 0.00 hours Monday to 24.00 hours the following Sunday
GREAT 
that tells them what a week is but then there is another question…
Under EC rules your daily rest can be reduced to 9 but NOT more often than
Amongst the options there is what they class as the correct answer - 3 days per week
Those that have done the theory now believe that they are correct when they say that only 3 reduced daily rests can be taken per week and not between weekly rest periods
Some might say that it makes the test easier but what is the point of that if the answer is wrong ?
ROG:
The LGV theory test questions and answers has the following -
A drivers week is defined as
Amongst the options there is the correct answer - 0.00 hours Monday to 24.00 hours the following Sunday
GREAT that tells them what a week is but then there is another question…
Under EC rules your daily rest can be reduced to 9 but NOT more often than
Amongst the options there is what they class as the correct answer - 3 days per week
Those that have done the theory now believe that they are correct when they say that only 3 reduced daily rests can be taken per week and not between weekly rest periods
Some might say that it makes the test easier but what is the point of that if the answer is wrong ?
Hi Rog
there could be a point to the choice of answers to the questions
it mite say for example
Under EC rules your daily rest can be reduced to 9 but NOT more often than
A 7 days
B 3 days
C 2 days
D 1 days
therefore the only answer is B
you must remember there try to make it easy not confuse 
Called Pearsons/DSA and they were most interested - they checked the question along with the answers and then checked the EU regs… they admitted verbally that the answers are incorrect and said they would look into changing those answers at the next re-issue of the various material.
No point in it being simple if it aint right !!