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If 3 is the logarthim of 343, then the b...

If 3 is the logarthim of 343, then the base is ……

A

5

B

7

C

6

D

9

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The correct Answer is:
B
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Consider the ten numbers a r ,a r^2, a r^3, ,a r^(10)dot If their sum is 18 and the sum of their reciprocals is 6, then the product of these ten numbers is 81 b. 243 c. 343 d. 324

FULL MARKS-BASIC ALGEBRA-Exercise-2.13
  1. If |x + 2| le 9 , then x belongs to

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  2. Given that x, y and b are real numbers x lt y, b gt 0, then

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  3. If (|x-2|)/(x - 2) ge 0, then x belongs to

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  4. The solution of 5x-1lt24 and 5x+1gt-24 is ……..

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  5. The solution set of the following inequality |x - 1| le |x - 3| is

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  6. The value of log(sqrt2)512 is …..

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  7. The value of log(3)""1/81 is …….

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  8. If log(sqrtx)0.25=4 then the value of x is ………

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  9. The value of "log"(a) b "log"(b)c "log"(c ) a is

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  10. If 3 is the logarthim of 343, then the base is ……

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  11. Find a so that the sum and product of the roots of the equation 2x^(2)...

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  12. If a and b are roots of the equation x^(2)-kx+16=0 and satisfy a^(2)+b...

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  13. The number of solutions of x^(2) + |x - 1| = 1 is

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  14. The equation whose roots are numerically equal but opposite in sign to...

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  15. If 8 and 2 are the roots of x^(2) + ax + c = 0 and 3,3 are the roots o...

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  16. If a and b are the real roots of the equation x^(2)-kx+c=0 , then the ...

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  17. If (kx)/((x + 2) (x - 1)) = (2)/(x + 2) + (1)/(x -1) , then the value ...

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  18. If (kx)/((x+2)(x-1))=(2(x-1)+1(x+2))/((x+2)(x-1)) =(3x)/(x+2)(x-1) i...

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  19. The number of roots of (x + 3)^(4) + (x + 5)^(4) = 16 is

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  20. The value of "log"(3)11."log"(11) 13."log"(13)15."log"(15)27."log"(27)...

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