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Find `n` if `nP_1=2`

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CENGAGE ENGLISH-BINOMIAL THEOREM-All Questions
  1. Statement 1: The total number of dissimilar terms in the expansion of ...

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  2. Statement 1: In the expansion of (1+x)^(41)(1-x+x^2)^(40), the coeffic...

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  3. Statement 1: The coefficient of x^n in (1+x+(x^2)/(2!)+(x^3)/(3!)++(x^...

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  4. Evaluate 3C2

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  5. Evaluate 5C2

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  6. Find underset(r=0) overset(10)sumr^ (10)C(r).3^(r).(-2)^(10-r)

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  7. Find n if nP1=2

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  8. Evaluate 5P2

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  9. The value of ("^n C0)/n+("^nC1)/(n+1)+("^nC2)/(n+2)+....+("^nC n)/(2n)...

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  10. The value of "^20 C0+^(20)C1+^(20)C2+^(20)C3+^(20)C4+^(20)C 12+^(20)C ...

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  11. If (3+x^(2008)+x^(2009))^(2010)=a0+a1x+a2x^2++an x^n , then the value ...

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  12. hat A hat A 404 C4 hatA hat aprime hat A hat A 4C1 hat A hat A hat A 3...

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  13. The sum of series ""^(20)C0-""^(20)C1+""^(20)C2-""^(20)C3+...............

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  14. If (1+x)^n=C0+C1x+C2x^2+...+Cn x^n , then C0C2+C1C3+C2C4+...+C(n-2)Cn=...

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  15. The value of lim(n->oo)sum(r=0)^(n)(sum(t=0)^(r-1)1/(5^n)*"^n Cr*"^...

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  16. Prove that C0-2^2C1+3^2C2-4^2C3++(-1)^n(n+1)^2xxCn=0w h e r eCr=^n Cr ...

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  17. The remainder, if 1+2+2^2+.......+2^(1999) is divided by 5 is.

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  18. Find the largest real value of x such that sum(k=0)^4((3^(4-k))/((4-k)...

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  19. If in the expansion of (a-2b)^n , the sum of 5th and 6th terms is 0, t...

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  20. The number of real negavitve terms in the binomial expansion of (1 ...

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