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If the lines a x+2y+1=0,b x+3y+1=0a n dc...

If the lines `a x+2y+1=0,b x+3y+1=0a n dc x+4y+1=0` are concurrent, then `a ,b ,c` are in a. A.P. b. G.P. c. H.P. d. none of these

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RESONANCE DPP-JEE MAINS-All Questions
  1. If matrix A=[a(ij)](3xx), matrix B=[b(ij)](3xx3), where a(ij)+a(ji)=0 ...

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  2. If m is a positive integer and Dr=|[2r-1,m(Cr),1],[m^2-1, 2^m, x+1],[...

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  3. If the lines a x+2y+1=0,b x+3y+1=0a n dc x+4y+1=0 are concurrent, then...

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  4. The equatioin of the image of the circle x^2+y^2+016 x-24 y+183=0 in ...

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  5. If A=([a(i j)])(3xx3), such that a(i j)={2,i=j and 0,i!=j ,t h e n1+(...

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  6. If (x1, y1)&(x2,y2) are the ends of a diameter of a circle such that x...

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  7. The lines L1: x-2y+6=0&L2: x-2y-9=0 are tangents to the same circle. I...

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  8. Find the equations of bi sectors of the angle between the lines 4x + 3...

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  9. The equation of the tangent of the circle x^2+y^2+4x-4y+4=0 which mak...

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  10. A straight line through the origin O meets the parallel lines 4x+2y=9...

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  11. If 3A=[-1-2-2 2 1-2x-2y] such that AA^T=I , then which of the followin...

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  12. Orthocentre of an acute triangle A B C is at the orogin and its circum...

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  13. If A=([a(i j)])(3xx3), such that a(i j)={2,i=j and 0,i!=j ,t h e n1+(...

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  14. If the point (1+costheta,s intheta) lies between the region correspond...

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  15. IfA is 4xx4 matrix and if ||A|a d j(|A|A)|=|A|^n then n is (a)11 (b)13...

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  16. The locus of the mid point of then intercept of the variable line xcos...

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  17. If P is a point (x ,y) on the line y=-3x such that P and the point...

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  18. Let three matrices A=[2 1 4 1]; B=[3 4 2 3]a n dC=[3-4-2 3], then 6 (...

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  19. The distance of (0,0) from 2x-3y+5=0 measured parallel to the line 3x-...

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  20. If A=[(1,2,-1),(-1,1,2),(2,-1,1)], then det (adj(adj A) is

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