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The number of orded 4-tuples (x,y,z,w) w...

The number of orded 4-tuples `(x,y,z,w)` where `x,y,z,w in[0,10]` which satisfy the inequality `2^(sin^(2)x)xx3^(cos^(2)y)xx4^(sin^(2)z)xx5^(cos^(2)w)ge120,` is

A

81

B

144

C

0

D

infinite

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The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-INEQUALITIES -Section I - Mcqs
  1. 2^(sin^(2)x)+2^(cos^(2)x) is

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  2. If xyz=abc, then the least value of bcx+cay+abz, is

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  3. The number of orded 4-tuples (x,y,z,w) where x,y,z,w in[0,10] which sa...

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  4. The range of ab if |a|le1" and "a+b=1,(a, b in R), is

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  5. If A = x^2+1/x^2 , B = x-1/x then minimum value of A/B is

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  6. The least perimeter of a cyclic quadrilateral of given area A square u...

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  7. A stick of length 20 units is to be divided into n parts so that the p...

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  8. If x. y, z are positive real numbers such that x^2+y^2+z^2=27, then ...

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  9. If x(1),x(2),...,x(n) are real numbers, then the largest value of the ...

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  10. The minimum value of the sum of the lengths of diagonals of a cyclic q...

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  11. The minimum value of |sinx+cosx+tanx+secx+"cosec"x+cotx|, is

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  12. The expression (a+b+c)(b+c-a)(c+a-b)(a+b-c) lekb^(2)c^(2) then k can...

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  13. If n is even and nge4,x(1),x(2),...,x(n)ge0 and x(1)+x(2)+...+x(n)=1,...

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  14. Find the least value of n such that (n-2)x^2+x+n+4>0,AAx in R ,w h e ...

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  15. The number of solution (s) of equation sin sin^(-1)([x])+cos^(-1)cosx=...

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  16. Number of solutions of |(1)/(|x|-1)|=x+sinx, is

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  17. The solution set of equation (x+2)^(2)+[x-2]^(2)=(x-2)^(2)+[x+2]^(2)...

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  18. The number of pairs of positive integers (x,y) where x and y are prime...

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  19. The number of solution of the equation 16(x^(2)+1)+pi^(2)=|tanx|+8pi...

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  20. The set of values of 'a' for which ax^(2)-(4-2a)x-8lt0 for exactly thr...

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