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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 12-EXERCISE
- If ^nPr=120 ^nC(n-r) , find the value of r.
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- x.and y are- real and if x + iy.=5/(-3+4i),find the value of x and y.
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- Find the constant term of the expansion of (a^3-1/a^2)^15
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- If the P th term of an AP is (3P - 5), then find the common difference...
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- Find the equation of a straight fine passes through the middle ofthe s...
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- Find the ratio in which the plane xy divides the join of A(2, 3. 5) an...
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- If y=xe^x,show that xdy/dx=(1+x)y.
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- f(x)=x^2+ax,when 0lexle1 and f(x)=3-bx^2,when 1lexle2 if limxrarr1f(x...
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- A unbiased coin tossed three times. Find the probability of getting 1 ...
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- If the variance of a distribution is 4 coefficient of variation is 5%,...
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- For any two sets, show that (A cap B) cup (A - B)= A.
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- If tan^2 alpha = 1 + 2 tan^2 beta, show that cos2 beta = 1 + 2cos 2alp...
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- Solve :sin x 4 cos x = sin 2x 4 cos 2x.
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- Prove by mathematical induction, 1+1/4+1/9+...+1/n^2<2-1/nwhen n ge 2,...
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- If arg ((z-1)/(z+1))=pi/4,, then show that in complex plane, the locus...
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- Find the term independent of x of the expansion of (1+x)^3(x-1/x)^6
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- If pth, qth and rth terms of on AP are a. b and c, then show that a(q...
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- A straight line form a right angled triangle with the axes. If the len...
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- If the co-ordinate of vertices of a triangle are (10, 4), (-4, 9) and ...
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- Find the co-ordinate of a point on the circle x^2 +y^2 - 4x + 2y - 20...
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