IQ Quiz 123 IQ Quiz Questions and Answers. Please enter your email: 1. If xyz=1 and x=z, y= 1/sqr(x) 1-sqr(x) sqr(x) 1-2x 2. Mr. Jones can mow his lawn in x hours. After 2 hours it begins to rain. What part of the lawn is left unmowed? x/2 x-2 (2-x)/x (x-2)/x 3. The expression (6/x)/(3/x) is equivalent to 18/sqr(x) sqr(x)/18 2 2x 4. If x + y = 16, then x – z = 16-y-z z+16 16-y 8 5. Which of the following represents the area of a rectangle whose length is x + 1 and whose width is x – 1? 4x 2x sqr(x)-1 sqr(x)+1 6. Which of the following numbers does not have a reciprocal? 1/3 0 1 -2 7. If 3x = 5/6 y, then 5y=? 2x 18x 3.6x 5x 8. If a and b are positive integers and (a-b)/3.5 = 4/7, then b>a b b>=a b=a 9. Which of the following must be added to 2x-4 to produce a sum of 0? x+2 x+4 2x+4 -2x+4 10. The number of feet in c inches is 36c c/12 1/12c 12c Loading … Question 1 of 10 Previous PostHomonyms Test 24 Next PostIQ Quiz 76