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Necessary Condition

Class 12 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsIf (h\circ g:A\to C) is onto, which statement must definitely be true?Class 12Relations and FunctionsOnto functionExpert MathematicsIf (f\circ g) is one-one, which statement is definitely true?Class 12Relations and FunctionsOne-one functionExpert MathematicsIf (g\circ f) is one-one, which of the following statements is definitely true?Class 12Relations and FunctionsOne-one functionHard MathematicsIf (g\circ f) is one-one, which of the following conclusions is certainly true?Class 12Relations and FunctionsOne-one functionHard MathematicsIf a relation (R) contains ((1,2),(2,1)) but not ((1,1)), what can be said about (R)?Class 12Relations and FunctionsTransitive relationHard MathematicsIf a relation (R) is symmetric, which conclusion is not necessary?Class 12Relations and FunctionsSymmetric relationMedium MathematicsIf (R) is an equivalence relation on a set and (aRb), which statement is necessary?Class 12Relations and FunctionsTypes of relationsExpert MathematicsIf (R) is an equivalence relation on a set and (aRb), which statement is necessarily true?Class 12Relations and FunctionsTypes of relationsHard