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In an AP,if the rth term is 2r-7, then,...

In an AP,if the rth term is 2r-7, then,the 4th term will be

A

a)1

B

b)-1

C

c)2

D

d)-2

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 7-EXERCISE
  1. Z is a complex number. If I Z l = 4 and arg(Z)=(5pi)/6,then the value ...

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  2. In the expansion of (2P+3/P)^10,the middle term will be

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  3. In an AP,if the rth term is 2r-7, then,the 4th term will be

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  4. Thestraight line sqrt3y-3x=3 makes an angle with x axis is

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  5. The equation of diameter to the circle x^2+y^2-6x+2y=15,which-passes, ...

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  6. IF x^2+y^2=4,then the, value of yy' +x.is

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  7. The'value of lim(xrarr0) 1/xsin^-1((2x)/(1+x^2))is

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  8. A and B are two independent events.if P(A)=3/5,P(AcapB)=4/9the value o...

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  9. The mean of square of 1st n natural number is

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  10. show that (A-B)capB=phi

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  11. A relation P defined as :P={(x,y):2x+3y=18,x,y in N} ,find the domain ...

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  12. Find the value of :(8 sin ^3 10^@-6sin10^@)

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  13. If sinA/3=sinB/3=sinC/4then show that cos C=1/9

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  14. Value of i^n+i^(n+1)+i^(n+2)+i^(n+3)(where i=sqrt-1)

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  15. If, the number of-diagonals of a- polygon is 44. Find the number of si...

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  16. 'Prove that the co-efficient of x^n of the expansion of (1+x)^(2n) is...

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  17. The sum of P terms of an AP is P^2. Find the common difference.

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  18. Find the co-ordinate of the point which is equidistance from (alpha, 0...

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  19. Calcualte the angle between the straight linesx+sqrt3 y+2=0and y+5=0

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  20. If f'(c) is the -derivative of f(x) at x= c,then show that lim(xrarrc...

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