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प्रश्न
For a non-zero rational number a, a7 ÷ a12 is equal to
विकल्प
a5
a−19
a−5
a19
MCQ
योग
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उत्तर
a−5
`a^mdiva^n=a^(m-n)`
Hence,
`a^7diva^12=a^(7-12)=a^(-5)`
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