1. You already asked the first sum?
2.
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the probability of the line being less than 13 will be the area of the triangle/ area of the rectangle... itll actually be inclusive of 13 so look for the answer that comes closest but is less than that ans... ie 1/2*12*5/5*16 = 3/8
3. C or A... 4% absolute increment... or 4% and -4%...
4. a = -1/b... 1/a + 1/b = -b +1/b = -b^2+1/b = 1-b^2/b
5. i
6. 2root41
7. The timespan is shown as 10yrs... if its 2 yrs... Let P= 500... therefore amount = 700... interest = 200 = PRT = 500*R*2... R = 20%... C
8. D
9. B
10. 2
11. A
12. Makes no sense at all
13. B
14. C... (nth term of a GP)
15. 2.5
16. I don't sup anyone did...
17. D... the only thing you can say is that at least 25% of the men are under 50 yrs...