9th class math all mcqs solve prepartion, Exams of Mathematics

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1) Equations having a common solution are called: b) Linear c) Quadratic d) Homogeneous 2) Areal number system contains a) Zero b) Positive Numbers c) Negative Numbers 3) If a is an element of R, and a = a,this property is called a) Trichotomy c) Symmetric d) Transitive 4) The set of month in a year beginning wish S: b) Empty c) Null d) {September,October, November} 5) For any sets A and B,AUB = AIB, if a) AUB = Null c) None d) B= Null