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On (\mathbb{R}), (a*b=a+b-3). What is the value of ((2*5)*7)?(\mathbb{R}) पर (a*b=a+b-3) है। ((2*5)*7) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (8)(8)
Step 1: First (2*5=2+5-3=4). Step 2: Then (4*7=4+7-3=8). Step 3: When brackets are given, follow that order even if the operation is associative.चरण 1: पहले (2*5=2+5-3=4)। चरण 2: अब (4*7=4+7-3=8)। चरण 3: कोष्ठक दिए हों तो उसी क्रम में संक्रिया करें, चाहे संक्रिया साहचर्य हो।
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