GRE Exam Numerical Ability Algebra

x>0, y>0,
x

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x is positive
11 years agoHelpfull: Yes(3) No(0)

answer is x
11 years agoHelpfull: Yes(0) No(1)

GRE Other Question

The probability of occurence of A is 1/4. The probability of occurence of B is 1/(x+2)^1/2. What is the probability of occurence of both A and B? Q. If a+3a is 4 less than 3b+b then what is average of a+b?