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If (a*b=a+b-1), what is the identity element?यदि (a*b=a+b-1) है, तो तत्समक अवयव कौन सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (1) / (1(1) / (1
Step 1: For (a*e=a), we need (a+e-1=a). Step 2: This gives (e=1), and (e*a=e+a-1=a) also works. Step 3: It is a good habit to check identity from both sides.चरण 1: (a*e=a) के लिए (a+e-1=a) होना चाहिए। चरण 2: इससे (e=1) मिलता है और (e*a=e+a-1=a) भी सही है। चरण 3: दोनों ओर से तत्समक शर्त जाँचना अच्छी आदत है।
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