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In the expansion of (1+2x+x^2)^7,the num...

In the expansion of `(1+2x+x^2)^7`,the number of terms will be

A

a)15

B

b)8

C

c)7

D

d)14

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 1-EXERCISE
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  2. In the expansion of (1+2x+x^2)^7,the number of terms will be

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  3. Number of roots of the equation sqrt(y+1)-sqrt(4y-1)=sqrt(y-1) are

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  4. If z=-i-1 is a complex number,then arg (z) will be

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  5. One double ordinate makes a right angle at the vertex of a parabola ...

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  6. If the perpendicular distance from origin to the straight line 4x-3y+P...

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  7. If y= 1/(n-x) then dy/dx=

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  8. If lim(xrarr3)(x^n-3^n)/(x-3)=108,then the value of n is

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  9. A con is tossed two times.The probability of getting tail in both time...

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  10. The median of given data 6,8,7,18,10,6,26,9,4,32,40 is

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  11. If universal set U={x:x in N,1lexle10}A={x:x in N,2lexle6}and B={x:x i...

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  12. Let P={1,2,,3},Q={1,8,27}and f:PrarrQbe given by f(x)=x^3and g(x)=6x^2...

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  13. Find the value of cos^2 48^@-sin^2 12^@

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  14. Prove that ,In /\ABC a(bcosC-ccosB)=b^2-c^2

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  15. If omegais an imaginary cube root of unity then prove that (xomega^2+y...

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  16. 1st,2nd,and 8th term of a G.P are a^-4,a^m,a^52.Find the value of m.

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  17. If the 5th term of the expansion of (x^(2//3)+x^-1)^nis the term indep...

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  18. Prove that AA n,14^n-13n-1 is divisible by 13.(n in N)

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  19. Find the distance between the lines 3x+4y=9 and 6x+8y+15=0.

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  20. Find the ratio in which the plane 2x+3y+5z=1 divides the line segment ...

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