1.

यदि `7^(x)=1/343` है तो `x` का मान क्या होगा?A. `-`B. `-3`C. `1/3`D. `1/7`

Answer» Correct Answer - B
`7^(x)=1/343=1/(7^(3))`
`7^(x)=1/(7^(3))`
`7^(x)=7^(-3)`
`x=-3` (if bases are equal then their power are also equal)


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