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`**` के किस मान के लिए कथन `[((**))/21xx((**))/189]=1` सत्य है?A. 3969B. 147C. 63D. 21

Answer» Correct Answer - C
According to the question
`implies x/21xxx/189=1`
`impliesx^(2)=21xx189`
`impliesx=sqrt(21xx189)`
`impliesx=sqrt(7xx3xx7xx9xx3)`
`implies x=63`


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