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प्रश्न
Choose the correct alternative:
If a * b = `sqrt("a"^2 + "b"^2)` on the real numbers then * is
विकल्प
Commutative but not associative
Associative but not commutative
Both commutative and associative
Neither commutative nor associative
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उत्तर
Both commutative and associative
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