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Maths Puzzle
Numerical Ability
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35: If a triangle has sides of lengths 8, 4, and 4 sqrt(3), is the triangle right?
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3. What is the critical chi-square value at the 5% significance rate with 16 degrees of freedom?
4. What is the critical chi-square value at the 1% significance rate with 6 degrees of freedom?
Simplify the rational expression:
x2 – 6x – 7
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x2 – 1