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The coefficient of x^7 in the expansion ...

The coefficient of `x^7` in the expansion of `(1-x-x^2+x^3)^6` is

A

-132

B

-144

C

132

D

144

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The correct Answer is:
B
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PATHFINDER-BINOMIAL THEOREM-QUESTION BANK
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  2. C0/2-C1/3+C2/4-C3/5+.... is equal to

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  3. The coefficient of x^7 in the expansion of (1-x-x^2+x^3)^6 is

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  4. Let (1+x^(2))^(2) (1+x)^(n) = underset(k = 0)overset(n+4)suma(k)x^(k)....

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  5. Coefficient of x^n in the expansion of (1+x)^(2n) is

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  6. If (1+x+x^2)^n=a0+a1x+...+a(2n)x^(2n) then

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  7. The coefficients of x^7 in the expansion of (x^3+3x+3/x+1/x^3)^5 is

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  8. 3^(2n+2)-8n-9 is divisible by

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  9. If (x+1/x+x^2+1/x^2)^11=a0x^(-22)+a1x^(-21)+.....+a44x^(22), then a0+a...

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  10. If (8+3sqrt7)^n=P+F, where P is an integer and F is a proper fraction,...

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  11. Let n=3^(100), then for n

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  12. Let an=(1000)^n/(n!) for n in N. Then an is greatest, when

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  13. Which of the following is/are correct

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  14. Answer the following question based on above passage: The coefficient...

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  15. Answer the following question based on above passage: The coefficient...

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  16. Let P=sum(r=1)^(50)(^(50+r)Cr(2r-1))/(^(50)Cr(50+r)), Q=sum(r=1)^(50)(...

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  17. Let P=sum(r=1)^(50)((50+r)Cr(2r-1))/((50)Cr(50+r)), Q=sum(r=1)^(50)(50...

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  18. In reference to the expansion (1+x)^n=sum(r=0)^nCrx^r, n in N, match t...

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