exam Maths Puzzle Numerical Ability

Q. Let f(x)=(x-1)^3 (x+2)^4(x-3)^5(x-6)divided by X^2(x-7)^3


Solve the following inequality
I) f(x)>0
II) f(x)> or =o
III) f(x)<0
IV) f(x)<

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exam Other Question

eight stock clerks can stock 26,000 cans in 10 hours. How long will it take 5 clerks to stock 16,500 cans? I can't figure out this problem:

Find S(sub8) and S(sub infinity) for the geometric sequence:
3/4, -1/2, 1/3.

Thanks in advance for your assistance!

V/r,
Loomis