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If log(2)(a+b)+log(2)(c+d) ge4, then the...

If `log_(2)(a+b)+log_(2)(c+d) ge4`, then the minimum value of a+b+c+d is

A

`2`

B

`4`

C

`6`

D

`8`

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The correct Answer is:
D
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ML KHANNA-LOGARITHMS AND SURDS-Problem Set (2) (Multiple choice questions)
  1. If 2log(16)(x^(2)+x)-log(4)(x+1)=2, then x=

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  2. If 2 log (x + 1) - log ((x^2) -1) = log 2. Then x equals to :

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  3. If log(2)(a+b)+log(2)(c+d) ge4, then the minimum value of a+b+c+d is

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  4. If log(x)(3x^(2)+10x)=3 , then x=

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  5. The solution set of the equation log(1//5)(2x+5)+log(5)(16-x^(2))le1 i...

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  6. The number of solutions of the equation 125^(x)+45^(x)=2.27^(x) is

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  7. The number of solutions of (log5+log(x^(2)+1))/(log(x-2))=2 is

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  8. The value of ' x ' satisfying the equation, 4^((log)9 3)+9^((log)2 4)=...

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  9. If 5^(1+log(4)x)+5^(-log4x-1)=(26)/(5), then x=

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  10. The solution set of the equation x^(log(x)(1-x)^(2))=9 is

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  11. If 7^(log(7)(x^(2)-4x+5))=(x-1), then x may have values

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  12. Sum of the roots of the equation 9^(log(3)(log(2)x))=log(2)x-(log(2)x)...

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  13. The equation 5^(1+log(5)cosx)=2*5 has

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  14. If x^(log(3)x^(2)+(log(3)x)^(2)-10)=1//x^(2), then x=

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  15. If x^([(log(2)x)^(2)-6log(2)x+11])=64, then x=

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  16. If log(3)2,log(3)(2^(x)-5) and log(3)(2^(x)-7//2) are in arithmetic pr...

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  17. The equation x^((3//4)(log(2)x)^(2)+log(2)x-5//4)=sqrt(2) has

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  18. The value of x satisfying the equation |x-1|^(log(3)x^(2)-2log(x)9)=(x...

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  19. (6)/(5)a^(log(a)xlog(10)alog(a)5)-3^(log(10)(x//10))=9^(log(100)x+log(...

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  20. The equation x^([(log(3)x)^(2)-(9//2)log(3)x+5])=3sqrt(3) has

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