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Seek the examination questions of the first grade of junior high school in the final of IMC International Mathematics Invitational Tournament (Singapore)
Junior high school second grade examination questions

Examination time: 90 minutes, the total score of the test paper 130 points.

Name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Nationality _ _ _ _ _ _ _ _ School _ _ _ _ _ _ _

First, multiple-choice questions (5 points for each question, ***50 points)

1. Algebraic value ()

A. it's 0 B. It is between 0 and 1. C. between-1 and 0. D. equal to 1 or-1.

2. In order to make the score meaningful, the value range of is ()

A.x≠0 B. x≠0 and x≠ 1 C. x≠0 or x≠ 1 d.x ≠ 0 ≠ 0 and x ≠/kloc-0.

3. If the center of gravity of a triangle is on one of its high lines, then the triangle must be ().

A. isosceles triangle B. right triangle C. equilateral triangle D. isosceles right triangle

4. Let w = 7321× 7322× 7323× 7324+1,then w is ().

A. a square number B. a cubic number C. a prime number D. an even number

5. let x