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The value of (8^(-25)-8^(-26)) is 7xx8^(...

The value of `(8^(-25)-8^(-26))` is `7xx8^(-25)` b. `7xx8^(-26)` c. `8xx8^(-26)` d. none of these

A

`(7)/(8^(25))`

B

`(7)/(8^(26))`

C

`(8)/(8^(26))`

D

`(8)/(8^(25))`

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The correct Answer is:
B
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  13. If 800xx(x^3)^(2)=8xx10^8, then x=

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  17. If [5^(9)xx5^(3)]div[5^(15)div5^(3)]=5^m, then find the value of m.

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