Predicting earthquakes using observable phenomena like phases of the moon, cloud ormations, weather conditions or animal behaviour is a controversial and, some would say, impossible task. There is little or no verifiable evidence to link any of these phenomena to predictions of actual seismic activity. Early detection, as a means of advance warning, is far more reliable than future prediction and can be done by measuring primary waves (referred to as P-Waves). These non-destructive waves travel faster through the earth’s crust than the harmful and destructive secondary waves and so can provide a valuable, albeit short, advance warning....
1. If animals can detect primary waves, they could be used to predict earthquakes. 
Question 10
A.  True 
B.  False 
C.  Cannot say

2. Primary waves travel at the speed of sound. 
A.  True 
B.  False 
C.  Cannot say
3. P-Waves, and the low-frequency electromagnetic signals some believe animals can sense, are not
the same thing. 
A.  True 
B.  False 
C.  Cannot say

4. Which age range shows the smallest number of sales per enquiry?
A.  16-24 years
B.  25-34 years
C.  35-44 years
D.  45-54 years
E.  55-64 years

5. Assuming 400,000 mail shots were sent out to 25-34 year olds, how many more enquiries would be generated compared to actual sales?
A.  800
B.  900
C.  1000
D.  1100
E.  1200
6. Last year there were 630 sales recorded for the 45-54 year old group. How many mail shots would have been sent out to reach this figure?
A.  630500
B.  625000
C.  685500
D.  760000
E.  787500