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If 3^x=6561 ,\ t h e n\ 3^(x-3) = (a)81 ...

If `3^x=6561 ,\ t h e n\ 3^(x-3)` = (a)81 (b) 243 (c)729 (d) 27

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RD SHARMA ENGLISH-EXPONENT-All Questions
  1. If a=25 , then a^((25)^0)+a^(0^(25))= (a)25 (b) 26 (c)24 (d) ...

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  2. {(1/3)^(-3)-(1/2)^(-3)}-:(1/4)^(-3) = (a)(19)/(64) (b) (64)/(19) (c...

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  3. (25^2-15^2)^(3/2) = (a) 4000\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \...

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  4. If (5/3)^(-5)xx(5/3)^(11)=(5/3)^(8x) , than x=? (a)-1/2 (b) -3/4 (c...

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  5. [{(-1/3)^2}^(-2)]^(-1) = (a) 1/(81) (b) 1/9 (c) -1/(81) (d) -1/9

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  6. ((144)^(1/2)+(256)^(1/2))/(3^2-2)= (A) 8 (B) 4 (C) -4 (D) -8

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  7. ( 1+3+5+7+9+11 )^ (3/2)   = (a)36                            ...

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  8. If a b c = 0, then ({(x^a)^b}^c)/({(x^b)^c}^a) = (a)3 (b) 0 (c)-1 ...

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  9. (2^3)^4 = (a)2^4*3 (b) 2^3*4 (c)(2^4)^3 (d) none of these

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  10. { ( 33 )^ 2 − ( 31 )^ 2 } ^(5/7) = (a)64                  ...

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  11. If a b c=0 , then find the value of {(x^a)^b}^c (a)1 (b) a (c)b ...

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  12. If a=3^(-3)-3^3\ a n d\ b=3^3-3^(-3),\ t h e n a/b-b/a (a) 0 (b) 1...

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  13. What should be multiplied to 6^(-2) so that the product may be equal t...

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  14. If x y z=0, then find the value of (a^x)^(y z)+(a^y)^(z x)+(a^z)^(x y)...

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  15. If 2^n=4096 , t h e n\ 2^(n-5) = (a)128 (b) 64 (c)256 (d) 32

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  16. The number 4, 70 , 394 in standard from is written as (a)4.70394xx10^...

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  17. The number 2.35xx10^4 in the usual from is written as (a)2. 35xx10^3 ...

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  18. If 3^x=6561 ,\ t h e n\ 3^(x-3) = (a)81 (b) 243 (c)729 (d) 27

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  19. If 2^n=1024 , t h e n\ 2^(n/2+2) = (a)64 (b) 128 (c)256 (d) ...

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  20. Find: ( 8^4 + 8^2 )^(1/2) = (a) 84           (b...

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