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Multiplication

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

MathematicsOn positive real numbers, (a*b=ab) is defined. Choose the correct option about (a*b=b*a) and ((a*b)*c=a*(b*c)).Class 12Relations and FunctionsBinary operationsExpert MathematicsOn (A={0,1}), (a*b=ab). Which is the identity element?Class 12Relations and FunctionsBinary operationsHard MathematicsOn (A=\mathbb{R}^{+}), (a*b=ab). In which set does the inverse of (a) lie?Class 12Relations and FunctionsBinary operationsExpert MathematicsOn (A={1,-1}), ordinary multiplication is the operation. What is the correct statement about this structure?Class 12Relations and FunctionsBinary operationsExpert MathematicsOn (A={0,1}), the operation (a*b) is ordinary multiplication. Which element has no inverse?Class 12Relations and FunctionsBinary operationsExpert MathematicsOn (A={1,-1}), usual multiplication is taken as the operation. What is the inverse of (-1)?Class 12Relations and FunctionsBinary operationsHard MathematicsOn (A={1,2,3,4}), (a*b) is the remainder when (ab) is divided by (5). What is the inverse of (3)?Class 12Relations and FunctionsBinary operationsHard MathematicsOn (A={1,2,3,4}), (a*b) is the remainder when (ab) is divided by (5). Which is the identity element?Class 12Relations and FunctionsBinary operationsHard MathematicsOn (A={1,2,3,4}), (a*b) is the remainder when (ab) is divided by (5), and remainder (0) is not replaced by (5). Is this a binary operation on (A)?Class 12Relations and FunctionsBinary operationsHard MathematicsOn (A=\mathbb{R}\setminus{0}), (a*b=ab). Which statement is correct for this operation?Class 12Relations and FunctionsBinary operationsHard MathematicsOn integers, (a*b=ab). Does (2) have an inverse in integers?Class 12Relations and FunctionsBinary operationsMedium MathematicsOn positive real numbers, (a*b=ab). What is the inverse of (5)?Class 12Relations and FunctionsBinary operationsMedium MathematicsOn positive real numbers, (a*b=ab). What is the identity element of this operation?Class 12Relations and FunctionsBinary operationsMedium MathematicsIf (a*b=ab), what is the value of (2*(3*4))?Class 12Relations and FunctionsBinary operationsEasy MathematicsIf (a*b=ab), what is the value of ((2*3)*4)?Class 12Relations and FunctionsBinary operationsEasy MathematicsIf the identity element is (1) for (a*b=ab), what is the inverse of (4)?Class 12Relations and FunctionsBinary operationsEasy MathematicsIf (a*b=ab), what will be the identity element?Class 12Relations and FunctionsBinary operationsEasy MathematicsIf (a*b=ab), why is this operation commutative?Class 12Relations and FunctionsBinary operationsEasy MathematicsIf (a*b=ab), what is the value of (3*8)?Class 12Relations and FunctionsBinary operationsEasy MathematicsThe operation (a\ast b=2ab) is given on non-zero real numbers. What is the identity element?Class 12Relations and FunctionsBinary operationsEasy