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1-3MATH JJ
——转自GR
Math is not difficult, but got a suck score at verbal. sigh.......anyway, here are some JJ today. hope can help others.
1. Is X<0? a.) X^3 < 0 b.) X^2+X+1 =0
2. root^4 [(X-3)^4] + root[ -x|X|] = ? *Update: X < 0
3. A can finish job at X hours, B takes twice the time A need, ask how much hours to finish the job with A & B work together.
one old jj.
1. Which one equal to 5000? => d.) 3/0.0006
2. one person running around a circle, after 300feet return to the start point, ask how much is the radius?
I.) 150/pei II.) 60/Pei III.) 25/pei
=> I.III
I will post others if i remember.. good luck.
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