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(1 +x)^15 = a0 + a1x +…..+a15 x^15 rArr ...

`(1 +x)^15 = a_0 + a_1x +…..+a_15 x^15 rArr sum_(r = 1)^15 r (a_r)/(a_(r - 1)) = `

A

110

B

115

C

120

D

135

Text Solution

Verified by Experts

The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-BINOMIAL THEOREM-EXERCISE 1B (BINOMIAL COEFFICIENTS)
  1. (C1)/(C0)+2. (C2)/(C1)+3. (C3)/(C2)+….+n.(Cn)/(C(n-1))=

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  2. 2.(C2)/(C1)+3.(C3)/(C2)+…...+n. (Cn)/(C(n-1))=

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  3. (1 +x)^15 = a0 + a1x +…..+a15 x^15 rArr sum(r = 1)^15 r (ar)/(a(r - 1)...

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  4. Prove that : If n is a positive integer, then prove that C(0)+(C(1))...

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  5. C0-(C1)/(2)+(C2)/(3)-…...+(-1)^n (Cn)/(n+1)=

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  6. (C0)/(1) + (C2)/(3) + (C4)/(5) + ……+(C16)/(17) =

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  7. C0 + (C1)/(2) + (C2)/(2^2) + (C3)/(2^3)+…..+(Cn)/(2^n)=

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  8. C3//4+C5//6+C7//8+….=

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  9. C0+(C1 x)/(2)+(C2 x^2)/(3)+…...+(Cn x^n)/(n+1)=

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  10. 2.C0 + (2^2)/(2).C1 + (2^3)/(3).C2 + ……+(2^11)/(11).C10 =

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  11. k. C0 + k^2 . (C1)/(2)+k^3. (C2)/(3)+…..+ k^(n+1). (Cn)/(n+1)=

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  12. 2. C0+ 2^2 (C1)/(2)+2^3. (C2)/(3)+…....+2^(n+1). (Cn)/(n+1)=

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  13. (C0)/(2)+(C1)/(3)+(C2)/(4)+…...+(Cn)/(n+2)=

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  14. The sum of (n+1) terms of the series (C0)/(2)-(C1)/(3)+(C2)/(4)-(C3)/(...

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  15. (C0)/(2)+(C1)/(6)+(C2)/(12)+…..+ (Cn)/((n+1)(n+2))=

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  16. Show that (2^(2) *C(0) )/(1*2)+(2^(3)*C(1))/(2*3)+(2^(4) *C(2))/(3*4)+...

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  17. C0 C1+C1 C2 + C2 C3+…+ C(n-1) Cn=

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  18. If (C0 + C1) (C1+C2)…(C(n-1) + Cn)=k C0 C1 C2… Cn then k=

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  19. If (1)/(1!(n-1)!) + (1)/(3!(n-3)!) + (1)/(5!(n-5)!) +…. =

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  20. sum(r=0)^(n) (""^n Cr)^2 =

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