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Find the sum :3.1^2+4.2^2+5.3^2+....upto...

Find the sum :`3.1^2+4.2^2+5.3^2+....`upto n terms.

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UNITED BOOK HOUSE-KALIDHAN INSTITUTION-EXERCISE
  1. In a machine,there is a password of five characters of which the first...

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  2. If the term independetn of x in the expansion of (k/3x^2-3/(2x))^9be 2...

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  3. Find the sum :3.1^2+4.2^2+5.3^2+....upto n terms.

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  4. A straight line passes through the point (2,3) and is such that the po...

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  5. Find the image of the point (3,8) with respect to the line x + 3y = 7 ...

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  6. The sum of the distances of a moving point from the points (c,0)and (-...

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  7. If the sum of first n terms of a G.P is p and the sum of the first 2n ...

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  8. The roots of the equation x^2+3x+4=0are alphaand beta.Form the equati...

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  9. Foe any two events A and B prove that ,P(A)geP(AcapB)geP(A)+P(B)-1

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  10. Two fair dice are thrown simultaneously .The two scores are then multi...

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  11. Find the maximum and minimum values of 3sintheta+4costheta+5

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  12. Find the locus of a point which forms a triangle of area 21 square uni...

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  13. Show that sin16^@+cos16^@=1/sqrt2(sqrt3cos1^@+sin1^@)

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  14. Sin A=m sin B,show that ,tan((A-B)/2)=(m-1)/(m+1)tan((A+B)/2)

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  15. Exhibit graphically the solution sets of the following system of linea...

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  16. State the fundamental theorem of algebra.solve the following in the co...

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  17. How many 4 digit numbers can be formed form the digits,1,1,2,2,3,3,4,4...

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  18. Find the sum upto n terms:0.7+0.77+0.777+…

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  19. The co-ordinates of A,B,C are (6,3),(-3,5)and (4,-2) respectively and ...

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  20. The equations of two sides of a square are 5x+12y-10=0 and 5x+12y+29=0...

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