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If log2=0.30103, then the number of digi...

If `log2=0.30103`, then the number of digits in `4^(50)` is

A

A)30

B

B)31

C

C)100

D

D)200

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The correct Answer is:
B
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DISHA PUBLICATION-LOGARITHMS-Practice Exercises (Standard Level)
  1. Which of the following is true ?

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  2. The value of log(2sqrt(3))(1728) is

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  3. If log2=0.30103, then the number of digits in 4^(50) is

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  4. Number of digits in 60^(12)

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  5. Find the value of log(3^(2))5^(4)xxlog(5^(2))3^(4) .

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  6. If a=b^(x),b=c^(y) and c=a^(z), then the value of xyz is equal to (a...

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  7. If log(7)log(5)(sqrt(x)+5+sqrt(x))=0, find the value of x.

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  8. If log(3)[log(3)[log(3)x]]=log(3)3, then what is the value of x ?

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  9. What is log(a+sqrt(a^(2)+1))+log((1)/(a+sqrt(a^(2)+1))) is equal to ?

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  10. (1)/((log(a)bc)+1)+(1)/((log(b)ac)+1)+(1)/((log(c)ab)+1) is equal to

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  11. If p = log(3)5 and q= log(17) 25 which one of the following is correct...

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  12. If log(10)x=a,log(10)y=b" and "log(10)z=c, then antilog (pa+qb-rc)=?

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  13. If a, b, c are three consecutive odd Integers, then the line ax - by +...

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  14. Find the value of (7^(3))^(-2log(7)8)

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  15. Find the values of x satisfying log(x^(2)+6x+8)log(2x^(2)+2x+3)(x^(2)-...

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  16. If log(0.3)(x-1)ltlog(0.09)(x-1), then x lies in the interval

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  17. If (log(3)x)^(2)+log(3)xlt2, then which one of the following is correc...

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  18. If x + log(10) (1 + 2^(x)) = x log(10) 5 + log(10)6 then x is equal to

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  19. How many values of (xgt1) satisfy the following equation: log(2)xxl...

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  20. The equation log(5)x+(log((x^(2)+3))25)^(-1)=log(25)10 has

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