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If a, b and c are in AP and if the equat...

If `a, b and c` are in AP and if the equations `(b-c)x^2 + (c -a)x+(a-b)=0 and 2 (c +a)x^2+(b +c)x+(a-b)=0` have a common root, then

A

`a^(2),b^(2),c^(2)"are in A.P."`

B

`a^(2),c^(2),b^(2)"in A.P."`

C

`a^(2),c^(2),b^(2)"are in G.P."`

D

`a^(2),b^(2),c^(2)"are in H.P."`

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RESONANCE ENGLISH-DPP-QUESTION
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  2. The arithmaeic mean of the nine numbers in the given set {9,99,999,….....

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  3. If a, b and c are in AP and if the equations (b-c)x^2 + (c -a)x+(a-b)=...

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  4. Solve :(tanx-(1)/(sqrt3))(cosx-(1)/(2))le0.

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  6. The value of "cosec"10^(@)+"cosec"50^(@)-"cosec"70^(@) is

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  7. Suppose alpha,beta,gammaa n ddelta are the interior angles of regular ...

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  8. If y=1costheta+2cos2theta+3cos3theta++99 cos 99theta , the maximum val...

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  9. Let alpha,beta,gamma and delta are four positive real numbers such tha...

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  10. If the sum of the series S=1+5/11+12/((11)^2)+22/((11)^3)+35/((11)^4)+...

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  11. Let [x] denote the greatest integer part of a real number x, if M= sum...

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  12. The sum sum(r=1)^(50) r.(2^(r)+2^(50-r)) equals

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  15. Suppose that P(x) is a quadratic polynomial such that P(0)=cos^3 40^@,...

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  16. Let y=ax^2+ bx + c be a quadratic expression having its vertex at (3,-...

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  17. Let y=ax^(2)+bx+c be a quadratic expression have its vertex at (3-2) a...

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  18. Through the centroid of an equilateral triangle, a line parallel to t...

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  19. Let 'X' denotes the value of the product.(1+a+a^2+a^3+.........oo)(1+b...

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  20. 50th term of the sequence 3+12+25+42+ is 5145 b. 5148 c. 5142 d. 5195

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