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2 log10 5 + log10 8 - 1/2\ log10 4=? a. ...

`2 log_10 5 + log_10 8 - 1/2\ log_10 4=?` a. `2` b. `4` c. `2+2 log_10 2` d. `4 - 4 log_10 2`

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RS AGGARWAL-LOGARITHMS-All Questions
  1. (log)(10)1 1/2+(log)(10)1 1/3+ up to 198 terms is equal to 0 b. 2 c...

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  2. log(9/14)+log(35/24)-log(15/16)=0

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  3. 2 log10 5 + log10 8 - 1/2\ log10 4=? a. 2 b. 4 c. 2+2 log10 2 d. 4 - 4...

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  4. prove that log2 + 16 log(16/15) + 12 log(25/24) + 7 log(81/80) = 1

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  5. If loga(ab)=x then logb(ab) is equals to

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  6. If log(10)2=a\ and log(10)3=b, then log5 12 equals a. (a+b)/(1+a) b. (...

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  7. If log 2=x ,\ log 3=y\ an d \ log7=z , then the value of log(4*root(3)...

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  8. If log4 x+log2 x=6, then x is equal to a. 2 b. 4 c. 8 d. 16

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  9. If log(10)(x^2-6x+10)=0, then the value of x is a. 3 b. 4 c. 1 d. 2

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  10. If log(10) x+log(10) y= 3 and log(10) x-log(10) y=1, then x\ and \ y a...

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  11. If log(10) x+ log(10) 5=2, then x equals a. 15 b. 20 c. 25 d. 100

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  12. If log(10)125+log(10)8=x ,\ then\ x is equal to a. 1/3 b. 0. 064 c. -...

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  13. ((log)9 27+(log)8 32) is 7/2 b. (19)/6 c. 4 d. 7

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  14. ((log)5 3)xx((log)3 625) equals 1 b. 2 c. 3 d. 4

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  15. ((log)5 5)((log)4 9)((log)3 2) is equal to 2 b. 5 c. 1 d. 3/2

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  16. If log(12) 27=a, then log6 16 is a. (3-a)/(4(3+a)) b. (3+a)/(4(3-a)) c...

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  17. If log10 5 + log10 (5x+1) = log10 ( x + 5) +1, then x is equal to

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  18. If log5 (x^2+x)-log5 (x+1)=2, then the value of x is a. 5 b. 10 c. 25 ...

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  19. 1/2 (logx + logy) will equal log((x+y)/2) if a. y=0 b. x=sqrt(y) c. x=...

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  20. The value of (1/(log3 60)+1/(log4 60)+1/(log5 60)) is

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