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Number of ways in which 3 tickets can be selected from a set of 500 tickets numbered `1,2,3,"…..",500` so that the number on them are in arithmetic progression is

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RESONANCE DPP ENGLISH-JEE MAINS-All Questions
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  3. Number of ways in which 3 tickets can be selected from a set of 500 ti...

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  7. Number of ways in which 7 people can occupy 6 seats, 3 seats on eac...

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  8. Let C be the centre, BCB the minor axis and S the focus (ae, 0) for ...

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  9. Two non-negative integers are chosen at random, then the probability ...

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  10. Let a(n) be the nth term of an AP, if sum(r=1)^(100)a(2r)= alpha " and...

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  11. If variance of variables a ,2a ,2a ,3a ,3a ,3a ,dot,10 a is 54 then va...

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  12. If mean of squares of deviations of a set of n observations about -2a ...

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  13. The angles of a triangle are in A.P. If the greatest angle is double ...

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  14. The area (in sq. units) of the quadrilateral formed by the tangents ...

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  15. A class consists of a number of boys whose ages are in A.P., the commo...

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  16. If 7 times the 7th term of an A.P. is equal to 11 times its elevent...

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  17. A bag contains 50 tickets numbered 1, 2, 3, .., 50 of which five are d...

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  18. The minimum area of the triangle formed by the tangent to (x^2)/(a^2)+...

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  19. int(x^2-1)/(xsqrt(1+x^4)) dx

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  20. If the solution of the differential equation (dy)/(dx)=1/(xcosy+sin2y)...

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